Warmth Base Layers

NeoSport Unisex Sports Skin Suit

651 reviews

SKU: BLRLM3XBK

~~$69.95~~ Save: $10 (14%)

^$59.95

+ wishlist

In Stock

DESCRIPTION

A form-fitting unisex skin suit made of lycra, designed for scuba and snorkeling, with internal key pocket.

Pros

Durable and well-made
Good value for the price
Accurate sizing and helpful customer service
Easy to put on and take off
Provides protection and warmth

Cressi Skin 1mm Suit

33 reviews

SKU: CSBS1NXSBKPK

^$69.95

+ wishlist

In Stock

DESCRIPTION

A 1mm fullsuit by Cressi with UV protection, reduced drag, and thermal insulation for scuba diving.

Pros

Extra warmth
Suitable for warm water
Good fit
Comfortable
Helps with wetsuit

Lavacore Men's Long Sleeve Shirt

23 reviews

SKU: LVCSLSMLR

^$129.95

+ wishlist

In Stock

DESCRIPTION

A neutrally buoyant, antibacterial long sleeve shirt with a soft fleece inner layer for warmth.

Pros

High quality
Effective buoyancy
Provides warmth
Recommended by dive instructors
Comfortable fit

NeoSport 1.5mm Xspan Men's Long Sleeve Top

20 reviews

SKU: NSPPLSSMD

~~$99.95~~ Save: $20 (20%)

^$79.95

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In Stock

DESCRIPTION

A ultra-soft, comfortable men's long sleeve top made from exclusive XSPAN material with 4-way stretch neoprene.

Lavacore Bibbed Hood

18 reviews

SKU: LVCHDLR

^$29.95

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In Stock

DESCRIPTION

A neutrally buoyant bibbed hood with antibacterial inner fleece and SPF 30+ sun protection.

Lavacore Women's Full Suit

17 reviews

SKU: LVCW6

^$249.95

+ wishlist

In Stock

DESCRIPTION

A female-specific fullsuit with antibacterial fleece, 4-way stretch, and flat lock stitching for reduced water flow.

O'Neill Thermo X Long Sleeve Rash Guard

17 reviews

SKU: ONLTXLTMD

^$71.95

+ wishlist

In Stock

DESCRIPTION

A high-performance long sleeve rash guard with incredible insulation, low bulk, and quick-dry properties for ultimate comfort and freedom of movement.

Lavacore Women's Long Sleeve Shirt

15 reviews

SKU: LVCSLSW18

^$129.95

+ wishlist

In Stock

DESCRIPTION

A female-specific, neutrally buoyant long sleeve shirt with thermal insulation and 4-way stretch.

Lavacore Men's Short Sleeve Shirt

15 reviews

SKU: LVCSSMML

^$119.95

+ wishlist

In Stock

DESCRIPTION

A neutrally buoyant men's short sleeve shirt with antibacterial fleece, 4-way stretch, and thermal insulation.

Lavacore Men's Vest

14 reviews

SKU: LVCVMLR

^$99.95

+ wishlist

In Stock

DESCRIPTION

A neutrally buoyant men's vest with 4-way stretch, soft fleece inner layer, and antibacterial properties.

NeoSport 1.5mm Xspan Women's Long Sleeve Top

13 reviews

SKU: NSPPLSSW6

~~$99.95~~ Save: $20 (20%)

^$79.95

+ wishlist

In Stock

DESCRIPTION

A 1.5mm XSPAN women's long sleeve top with 250% 4-way stretch neoprene, flat lock seams, and anatomical cut.

Lavacore Women's Hooded Vest

11 reviews

SKU: LVCHVTW18

^$129.95

+ wishlist

In Stock

DESCRIPTION

A female-specific hooded vest with antibacterial inner fleece, 4-way stretch, SPF 30+ sun protection, and full gusset underarm.

Lavacore Men's Hooded Vest

11 reviews

SKU: LVCHVTMLR

^$129.95

+ wishlist

In Stock

DESCRIPTION

A men's hooded vest with antibacterial inner fleece, 4-way stretch, SPF 30+ sun protection, and full gusset underarm.

Lavacore by Oceanic Men's Long Sleeve Hooded Shirt

9 reviews

SKU: LVCHSMXL

^$159.95

+ wishlist

In Stock

DESCRIPTION

A men's hooded shirt made of Lavacore fabric with SPF 50+ sun protection and thermal insulation.

Lavacore Pants Unisex

7 reviews

SKU: LVCP2XL

^$139.95

+ wishlist

In Stock

DESCRIPTION

A unisex pants with antibacterial fleece, 4-way stretch, breathable layer, and neutral buoyancy.

Scubapro 1mm Hybrid Thermal Men's Long Sleeve Top

5 reviews

SKU: SCPHTTLMXL

^$119

+ wishlist

In Stock

DESCRIPTION

A form-fitting, sleek hydrodynamic men's long sleeve top made of neoprene for thermal insulation.

Sharkskin Titanium 2 Men's Long Sleeve Top, Pants, Hood & Socks Package

3 reviews

SKU: PCKSHST2LMK

~~$699.97~~ Save: $70.01 (10%)

^$629.96

+ wishlist

In Stock

DESCRIPTION

A thermal protection package for men, featuring a titanium-infused material that retains body heat in cold waters.

Sharkskin Titanium 2 Men's Front Zip Long Sleeve Top

3 reviews

SKU: SHST2LM4X

^$299.99

+ wishlist

In Stock

DESCRIPTION

A front-zip long sleeve top for male scuba divers with unmatched thermal protection and smart temperature control.

Bare ExoWear Pants Women's, Black

3 reviews

SKU: BREPW10

^$179.95

+ wishlist

In Stock

DESCRIPTION

A maximum thermal protection pants with OMNIRED Infrared Technology, 3-layer fabric, and 4-way stretch.

Bare Ultrawarmth Base Layer Top for Men

2 reviews

SKU: BREMUWBLTXL

^$124.95

+ wishlist

In Stock

DESCRIPTION

A highly-rated, stretchable fleece base layer top for men that converts body heat into infrared energy.

Scubapro K2 Light Undergarment Top

2 reviews

SKU: SCPK2LTMMD

^$89

+ wishlist

In Stock

DESCRIPTION

A modern, eye-catching undergarment top for men, made of fleece material, providing thermal protection in temperate waters.

Sharkskin Titanium 2 Women's Front Zip Long Sleeve Top

2 reviews

SKU: SHST2LW8

^$299.99

+ wishlist

In Stock

DESCRIPTION

A women's front zip long sleeve top with unmatched thermal protection and titanium-infused technology.

Fourth Element Thermocline Long Sleeve Top Men's

2 reviews

SKU: FRTTLLSMM

^$305

+ wishlist

In Stock

DESCRIPTION

A revolutionary, ocean-positive long sleeve top for men, made with recycled ghost fishing nets and providing thermal insulation.

Bare Ultrawarmth Base Layer Pants for Men

2 reviews

SKU: BREMUWBLPMD

^$102.95

+ wishlist

In Stock

DESCRIPTION

A stretchy, moisture-wicking fleece base layer for men with infrared technology for ultimate warmth and dryness.

Sharkskin Chillproof Men's Long Sleeve Full Zip Top and Pants Package

1 reviews

SKU: SHSCLSZMP

~~$439.98~~ Save: $44 (10%)

^$395.98

+ wishlist

In Stock

DESCRIPTION

A windproof and flexible men's top and pants package made with premium fleece and chill-proof material.

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Warmth Base Layers

When it comes to diving and water sports in colder conditions, the right warmth base layers are essential for both comfort and safety. As winter lingers and water temperatures dip, thoughtful layering can make the difference between a shivering, shortened dive and a long, memorable underwater adventure. A diving thermal base layer is designed to be the first line of defense against the cold, worn directly against the skin to trap body heat while efficiently wicking away moisture. This is especially important in scuba diving, where even slight water seepage into a wetsuit or drysuit can quickly sap warmth from your core. The latest advances in fabric technology have resulted in scuba base layers that combine thermal insulation with breathability, reducing the risk of overheating during surface intervals or exertion. Materials like high-grade synthetics and Merino wool blends are prized for their ability to retain warmth even when damp, resist odors, and dry quickly between dives. A proper fit is crucial—snug enough to eliminate gaps where cold water can creep in, but flexible enough to allow a full range of motion for finning, adjusting gear, or handling equipment.

Warmth base layers are not only for the hardcore diver braving icy waters; they’re also a thoughtful gift for anyone who enjoys snorkeling, paddleboarding, or open-water swimming in cooler months. Families heading to the coast for a winter getaway, instructors spending long hours in and out of the water, or even underwater photographers who need to remain still for the perfect shot will all appreciate the difference a quality base layer makes. Seasoned divers often recount how a reliable thermal layer became their most-used piece of gear during a surprise cold snap or an early spring dive trip. Beyond diving, these versatile garments transition seamlessly into other outdoor pursuits—serving as a go-to base for hiking, skiing, or even daily commutes when the mercury drops. When selecting a base layer, consider factors such as the expected water temperature, the type of exposure suit you’ll be wearing, and your own tolerance for cold. Heavier weights offer more insulation for frigid conditions, while lighter options excel in active pursuits or milder climates. Look for features like flatlock seams to prevent chafing, thumb loops for easy layering, and mesh panels in high-sweat zones for added moisture control.

As you browse our curated selection of warmth base layers, remember that investing in quality thermal protection is an investment in longer, safer, and more enjoyable time on—and under—the water. Whether you’re planning a February dive in brisk northern seas or gearing up for early morning training sessions, the right base layer will help you maintain your focus and energy. For those seeking to maximize their time outdoors year-round, layering strategies can be further enhanced by exploring additional options in our Warmth Layers collection. By choosing the right combination of materials, weights, and fits, you’ll be well-prepared to embrace every adventure, no matter how chilly the conditions.