Pinnacle 5mm Tempo Merino Elastiprene Super-Stretch Wetsuit WS46MBK12 150618

Mfg Part #: WS46MBK12
  • 5mm throughout the main body for greater warmth
  • 100% Elastiprene (Super-Stretch) stretches up to 200% more than standard neoprene  
  • Merino lining increases warmth without increasing bulk or buoyancy
  • Merino promotes quick drying to help reduce odors
  • Molded Anti-skid rubber shoulder pads designed to grip the buoyancy compensator, reduce shifting and reduce wear from your bcd straps
  • Multi-panel rubber knee pads provide exceptional grip and durability
  • Wrist, ankle and neck seals helps keep cold out
  • Back Zip with Leash (pull cord)
  • 8” ankle zippers seals make donning and doffing easier
  • 10mm Spine pad to keep the chill out

Customer Reviews for Pinnacle 5mm Tempo Merino Elastiprene Super-Stretch Wetsuit:

See the top 20 most helpful scuba gear reviews

Average Customer Review: based on 8 reviews.

Rating: Warm But Tough To Don
Reviewer: LOUIS D.  -  View all my reviews
The suit is warm and works well once on. The velcro in the neck area could be better and has been the source of an occasional leak. Getting it on is not the easiest task. Overall it is a good suit and I purchased at a good price through There is room for improvement, mostly in the velcro area in the neck and if the wrist area had zippers it would make the suit easier to don and it would be more comfortable, as the wrist seals are rather tight and can become uncomfortable.

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12 out of 20 people found this review helpful.

Rating: High Quality, Well-Fitting Wetsuit
Reviewer: Heidi Fickinger  -  View all my reviews
I stumbled upon this brand of suit when I bought a 3 mil at a local dive shop. When I needed a 5 mil suit for up-coming dive trip to South Africa, this is the suit I bought. Love the soft seal on the neck and the spine pad make these suits toasty warm. The flexibility makes them super comfortable to wear. They are well-made inside and out, including individual seals where multiple seams meet to avoid splitting. I dive a lot and my 3 mil has held up well after 3 years of use. Will replace it with another Pinnacle when it finally gives up the ghost. Worth every penny.

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18 out of 37 people found this review helpful.

Rating: Warm and comfy
Reviewer: eric n.
This suit dons easily, its warm. Feels nice against the skin and is stretchy so you can move around a bit. Purchased the XL. At 73" tall and 200 lbs this suit fits perfectly. One thing I dod notice about the suit is that the velcro will stick to the merino lining inside so heed the warning on the suits instruction card and pay attention when you are putting this suit on and especially when taking it off. I caught a bit of merino with velcro the first time i took it off. Its s great suit though just be careful with the velcro and merino.

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23 out of 43 people found this review helpful.

Rating: Cadillac All The Way
Reviewer: Kathleen B.
Im right in the middle of the size chart for the Large Short at 510 200lbs and it is a bit of a fight to get into and feels a bit constricting. Theres definitely not much room for anything beneath it beyond maybe a compression garment or rash guard. If youre near the top of the chart you might want to think about going up a size. Otherwise it does what its supposed to - in the water it feels great and seals well, and I assume with a bit more use it will loosen up a little. Its my first 5mm suit, so I cant really compare it warmth-wise to others, but in the 68-72 degree water over the past weekend it kept me comfortable (and looking sharp).

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27 out of 47 people found this review helpful.

Rating: Pinnacle 5mm Tempo Merino Elastiprene Super-Stretch Wetsuit Review - Scuba Gear Customer Reviews
very stretch, easy on/off, grizzly size, what else ?

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Rating: IMHO
Reviewer: ALEKSANDR Z.
I love this suit! Very comfortable and warm!

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17 out of 33 people found this review helpful.

Rating: Diane
Reviewer: Diane Fullaway
Easy on very warm great time in the Indian Ocean !,

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15 out of 28 people found this review helpful.

Rating: Not as good as I expected..
Reviewer: Jorge Javier Sandoval Pita #EC107Q31136N
It is not as warm as I thought even with the merino lining but I ll get used to it until I buy a 7mm suit..

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19 out of 40 people found this review helpful.

Questions and Answers for Pinnacle 5mm Tempo Merino Elastiprene Super-Stretch Wetsuit:

  • Aaron:

    hey there I bought a MT and found it to be too small for me, Im 63 and between 160-170 lbs , I found a XL for a really good price, will it be too big for me or should I aim for a LT?

    Darrick  (Certified Scuba Instructor at

    Hello Aaron, the XL would work for you in size.

  • Tom:

    Im 58" 235 47" chest 40" waste. What size would you recommend. Or should I be looking at the Tempo XT? Im switching from a Henderson Hyperstretch XL that fit great for years but got a nasty tear that just wont be sealed.

    Darrick  (Certified Scuba Instructor at

    Hello Tom, going by your measurements I would suggest the size XLarge Short.

  • Joe:

    Im 5-8", 186lbs, 44" chest, 40" waist What size do you suggest?

    Darrick  (Certified Scuba Instructor at

    Hello Joe, going by your sizing you would need to to order the size Large short.

  • Heidi:

    I have a 3 m Pinnacle suit that I love and need a 5 m. The suit size I have says MTL. Can you tell me which size this is according to the sizes here on your website, please? Thank you

    Darrick  (Certified Scuba Instructor at

    Hello Heidi, that size is a medium-large tall.

  • Randall:

    Diving the Reds Sea end of November/First week of December. Is Pinnacle in temperate water the BEST? Also, struggling to put together any of the Pinnacle products into a package. For example: What hood mates with this?

    Darrick  (Certified Scuba Instructor at

    Hello Randall, if you are looking for a system that mates well together I would look at the: As for the Pinnacle it is a very good suit but any hood, gloves, and boots will mate up with this suit.

    Bob  (Certified Scuba Instructor at

    The "best" is a matter of personal preference. When it all boils down to it the "best" wetsuit on the market is the one that fits you best. Any wetsuit hood will mate with any wetsuit perfectly. If you wish to stay with Pinnacle,Pinnacle 5mm Merino Titanium Lined Zippered Diving Hood works quite well.

  • fran:

    at 240 and 6 38-40 waist what size suit would I need?

    Darrick  (Certified Scuba Instructor at

    Hello Fran, when you are sizing a wetsuit or dive skin. The two most important measurements are going to be your chest/bust and waist. Height is a secondary measurement and weight is the last measurement you take into account.



    Bob  (Certified Scuba Instructor at

    The sizing chart indicates XL Short would be your size in this suit.

Incorporating our patented Merino™ lining and high stretch elastiprene materials providing the ultimate in warmth and comfort

Male Tempo available in 3mm, 5mm or 7mm

• A choice of 3mm, 5mm or 7mm thicknesses
• Pinnacle's patented Merino™ lining system adds up to 35% insulating power
• Merino™ dries quickly, helps the suit slide on, and is odor-resistant
• Next generation Elastiprene titanium lined neoprene throughout the wetsuit
is even stretchier and more flexible than the original Elastiprene wetsuits
• Rear zipper is equipped with a 10mm spine flap and smoothskin seal to
provide spine protection and reduce internal water movement
• Pinnacle Defense System (PDS) prevents zipper from biting into the
spine pad
• Main zipper is equipped with long pull leash and Velcro tie down
• 8' ankle zipper seals make donning and doffing easier, yet seal water out
• Smoothskin chimney ankle and O-ring wrist seals create effective
barriers to water entry; trapping body-heated water inside the suit, keeping
the diver warm
• Roll neck collar with newly redesigned neck closure and smoothskin seal
provides a better water barrier and increased comfort
• Molded rubber shoulder pads hold BC in place, pad the diver's shoulders,
and prevent suit wear

Siren (female version) available in 3mm, 5mm or 7mm
• Innovative multi-panel rubber knee pads protect the diver and the suit
• Double-glued and blind stitched construction
• Stress disks applied at all internal seam intersections for added strength
• 13 Male and 10 Female sizes
• New brighter, livelier color patterns that are unique to each gender

Though Merino™ was virtually unknown to the diving industry 5 years ago, it has come to be known as a hallmark of excellence. Discerning divers who want the most innovative and most durable products seek out PINNACLE, and those who will settle only for the best of the best choose PINNACLE’s Merino™ lined products. This unique material is truly the best-performing way to line a suit ever devised, providing more warmth, comfort, and odor control than any other.

The key step to making any wetsuit perform to its ultimate potential is reducing water transfer. This process, whereby water from the diving environment enters and exits the wetsuit, allows cold water to enter the suit and lets bodywarmed water exit; thus chilling the diver, even in tropical waters. PINNACLE nearly eliminates water transfer by creating better barriers to keep cold water out, making more form-fitting products that prevent internal water movement, employing the renowned Merino™ lining system to enable body heat to warm internal water, and then making it extremely difficult for that warm water to escape.

In order to prevent water entry and egress, PINNACLE employs the latest technology in sealing systems. Features like honeycomb o-ring wrist seals, Orcaskin™ forearm gussets, smoothskin chimney seals in the ankles, roll-neck collars with smoothskin sealing surfaces, smoothskin-to-smoothskin sealing surfaces on 10mm spine pads, and the innovative Pinnacle Defense System (P.D.S.) combine in PINNACLE suits to create a significantly better water barrier than in other brands. These sealing systems work as checkpoints, neither allowing water in the suit nor out.

The second step, having a more form-fitting suit, is achieved by offering divers more choices in sizes. PINNACLE offers as many as 17 male, 12 female and 4 children’s sizes in wetsuits, as well as more sizes of boots, gloves, and hoods than most other manufacturers.
PINNACLE has the ability to customize suits to some extent to fit people with more challenging shapes, but with up to 33 stock sizes, one is sure to fit almost any diver perfectly; and a tighter, better-fitting suit leaves less room for water to move, which keeps the diver warmer.

The magic of Merino™ occurs between these steps, after a small, tightly-controlled amount of water is allowed to enter the suit, and before it (by this time warmed by a diver’s body heat) tries to escape.

Most wetsuits are lined with a synthetic weave of nylon and polyester, no different than they were 25 years ago. Once water floods these wetsuits, the water flows freely around the diver within the suit because the suit’s lining has very little ability to absorb and retain water. The diver’s body heat is drawn away from the diver in order to warm up the colder water, the exact inverse of an ice cube melting in a glass of water in order to chill the beverage. This creates temperature equilibrium, making the diver somewhat colder and the water slightly warmer. After the water sloshes around the interior of the suit, it then spills out into the environment, only to be replaced by more cold water from the outside environment, and the process begins again. Over time, the diver’s body loses more and more heat as it futilely tries to heat up huge and ever-cycling quantities of water. (Remember what happens to the ice cube after a short time!).

However, PINNACLE’s best suits work on an entirely different concept. Our seals are more complicated and costly to build, but worth the expense, as they are infinitely more effective. They keep cold water out of the suit and trap warmed water inside the suit. PINNACLE’s high-end suits, boots, gloves, hoods, hooded vests, drysuits, and undergarments employ the patented Merino™ lining system, which holds up to 30% more warm water vapor, creating a thermally protected personal environment for the diver.

In contrast to inferior suits, PINNACLE’s suits allow only a small, closely-controlled amount of water to slowly enter the suit. The Merino™ lining then holds a greater amount of that water and retards the water’s circulation throughout the inside of the suit. After the diver’s body heat has warmed that water, the water is held inside the fibers of the Merino™ lining and kept there by the superior PINNACLE sealing systems. This means that a diver expends less heat energy because he is trying to warm a smaller volume of water throughout the dive, leaving a diver feeling warmer and more energetic after being
submerged for a given period of time.

Independent testing performed by the British Textile Technology Group in London, England found that a wetsuit lined with Merino™ is 35% more thermally
efficient than a wetsuit made with a traditional lining. Under the new CE testing guidelines, all of PINNACLE’s Merino™ lined suits achieved the highest possible ratings for insulation effectiveness. This proves that PINNACLE’s Merino™ lining system is a superior insulator.

Furthermore, Merino™ lined wetsuits are not as affected by depth as most wetsuits. Any neoprene wetsuit will compress to some extent as a diver descends and the ambient pressure becomes greater. A 7mm suit will become a 5mm suit and a 3mm suit and so on as a diver goes farther down the water column. As the suit compresses, the insulation value of the rubber decreases, and water inside the suit is squeezed out into the environment. Thus, the inherent warmth of the suit itself becomes of lesser value. In traditional wetsuits, with water flowing in and out of the suit, this means that the wetsuit system’seffectiveness is tremendously impaired as the diver leaves the surface.

Merino™ lined PINNACLE suits work far better because they are not as affected by depth and pressure. Though our suits also compress as a diver descends, the water that is absorbed into the Merino™ lining is unaffected by the pressure exerted by the water outside the suit. The lining creates a layer of water, warmed by the diver’s body, which can be as much as 3mm thick. Because this layer of warm water is not compressed by depth, the warmth of the suit system is less affected. So, as the diver descends and the neoprene in the suit is
compressed thinner and becomes less effective, the Merino™ lined suit stays nearly as warm as it was on the surface, even on the deepest and longest of dives.

Furthermore, Merino™ is exothermic, meaning that it releases a measurable amount of heat as it draws water across its fibers. It is almost as though the suit were equipped with its own heat generating source. Merino™ offers other benefits to divers as well. In addition to the added warmth created by the lining, it is more comfortable and helps to reduce odors. Merino’s™ super soft
composition and incredibly fine fibers not only eliminate the itch often felt with other wools, but they actually help to reduce the rashes often experienced in high-action areas, such as under the arm and behind the knee. Additionally, because Merino™ creates very little surface friction, it allows a suit to slide on easier than any other that you’ve ever tried, particularly when wet. Merino’s™ excellent moisture absorption properties and uneven surface structure prevent the build-up of bacteria, whereas bacteria thrive on the exposed flat surfaces of synthetics. Many odors and infections that affect divers are borne of bacteria. Merino™ protected suits tend to stay fresher smelling, especially on dive trips, when thorough washing may be infrequent. It is far more resistant to abrasion and “Velcro-attack” while also reducing the ability for soil particles to stick to your suit’s lining. Merino™ dries faster than traditional wetsuit linings, so after-dive care is easier than ever.

Merino™ is the ideal wetsuit lining for so many reasons. It has been scientifically proven to be far more efficient than traditional linings; and it is softer, more comfortable, and it slides on easier than standard wetsuits. It is exothermic upon wetting, faster drying, and more hygienic than other suits. It is a wholesome renewable resource. But the real beauty of slipping into a Merino™ lined wetsuit is the beauty of nature herself.
It just feels right.

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