One Piece Base Layers

When it comes to exploring the underwater world, having the right gear is essential. Whether you're a scuba diver or a snorkeler, one-piece base layers are a must-have addition to your underwater sports wardrobe. These versatile garments provide a comfortable and flexible layer of protection against the elements, making your diving or snorkeling experience even more enjoyable. Designed with durability and functionality in mind, one-piece base layers offer superior moisture-wicking properties and thermal insulation to keep you warm and dry during your underwater adventures. With a range of styles and designs available, finding the perfect one-piece base layer to suit your needs is easier than ever.

Henderson 3mm Thermoprene Men's John Wetsuit

13 reviews

SKU: HNDT3MJXL

^$211.99

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In Stock

DESCRIPTION

A high-quality 3mm Thermoprene men's wetsuit with 75% more stretch, glued & sewn seams, and spine & lumbar pads.

NeoSport Unisex Sports Skin Suit

651 reviews

SKU: BLRLMXLYL

~~$69.95~~ Save: $15 (21%)

^$54.95

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In Stock

DESCRIPTION

A form-fitting unisex spandex skin suit for scuba and snorkeling, with internal key pocket and defense against irritants.

Pros

Durable and well-made
Good value for the price
Easy to put on and take off
Provides protection and prevents sunburn
Quick-drying and lightweight

Lavacore Shorts Unisex

8 reviews

SKU: LVCSMD

^$99.95

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In Stock

DESCRIPTION

A technically advanced unisex shorts with windproof and thermal control features, providing SPF 50+ sun protection.

Cressi Demon Rash Guard with Chest Pad

4 reviews

SKU: CSBDRGGRXL

^$59.95

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In Stock

DESCRIPTION

A mimetic-colored rash guard with chest pad, designed for spearfishing, providing protection and camouflage.

Sharkskin Titanium 2 Men's Front Zip Full Suit with Hood and Socks Package

1 reviews

SKU: PCKSHSTCUM

~~$739.97~~ Save: $74 (10%)

^$665.97

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In Stock

DESCRIPTION

A 5mm Sharkskin Titanium 2 men's full suit with hood and socks package for thermal protection in waters down to 68 degrees F.

Cressi 2.5/5mm Base Layer Women's Hooded Vest

SKU: CSBB2VWLR

^$129.95

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In Stock

DESCRIPTION

A women's hooded vest made of neoprene with a 2.5mm chest area and 5mm hood for warmth and flexibility.

Scubapro 0.5mm Sport Men's Full Wetsuit

SKU: SCPSF05MXL

^$189

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In Stock

DESCRIPTION

A comfortable and stretchable 0.5mm full wetsuit for men, perfect for pool, warm dives, and layering.

Mares Men's Rash Guard Trilastic Shorts

61 reviews

SKU: MRSMRGTSLR

^$49.95

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In Stock

DESCRIPTION

A protective and versatile pair of Trilastic shorts for men, ideal for scuba, snorkeling, and water sports.

Pros

Versatile and can be used for various water activities
High quality and well made
Quick-drying and lightweight
Comfortable and supportive
Works well under wetsuit

Cressi Skin 1mm Suit

32 reviews

SKU: CSBS1NSMBKSL

^$69.95

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In Stock

DESCRIPTION

A 1mm nylon neoprene suit with a long front zipper, heel stirrup straps, and thumb loops for reduced drag and UV protection.

Pros

Extra warmth
Quick delivery
Suitable for snorkeling
Good fit
Helps with wetsuit

Henderson Polyolefin Jumpsuit

20 reviews

SKU: HNDPJBKXL

^$185.99

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In Stock

DESCRIPTION

A durable and versatile polyolefin jumpsuit with spine pad, offering protection, warmth, and comfort.

Pros

Versatile
Lightweight and buoyant
Durable and comfortable
Ease of donning and doffing wetsuit
Great for warmer water diving

O'Neill Thermo X Long Sleeve Rash Guard

17 reviews

SKU: ONLTXLT2XL

^$71.95

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In Stock

DESCRIPTION

A men's rash guard with 4-way stretch fabric, low bulk insulation, and quick-dry properties for water sports.

Scubapro UPF 50 Steamer for Women

9 reviews

SKU: SCPUSWGYMD

^$129

+ wishlist

In Stock

DESCRIPTION

A Scubapro UPF 50 Steamer for Women offers head-to-toe protection with UPF 50 and prevents ride-up with thumb loops and foot stirrups.

Akona Unisex Front Zipper Skin Suit

3 reviews

SKU: AKNUFLSYLXS

^$59.95

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In Stock

DESCRIPTION

A versatile unisex skin suit offering SPF50 UV protection and easy front zipper access.

Waterproof R30 Long Sleeve Rash-Guard, Men's

2 reviews

SKU: WPGR3LMMML

^$91.30

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In Stock

DESCRIPTION

A long sleeve rash-guard for men made of spandex, ideal for scuba diving with increased warmth and easy wet-suit donning.

Sharkskin Titanium 2 Men's Chest Zip Full Suit

1 reviews

SKU: SHSTCZWMT

~~$699.99~~ Save: $140 (20%)

^$559.99

+ wishlist

In Stock

DESCRIPTION

A men's full suit with titanium nanoparticle technology, offering 5mm thermal protection and four-way stretch.

Cressi 2.5/5mm Base Layer Men's Hooded Vest

SKU: CSBB2VM2X

^$129.95

+ wishlist

In Stock

DESCRIPTION

A Cressi 2.5/5mm Base Layer Men's Hooded Vest provides warmth and protection for male divers with its flexible neoprene material.

Cressi 2.5mm Core Vest Base Layer for Men

SKU: CSB25BVMXL

^$89.95

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In Stock

DESCRIPTION

A 2.5mm neoprene vest for men, designed to enhance warmth and comfort during Scuba diving.

Fourth Element J2 Women's Shorts

SKU: FRTJ2SWM

^$99

+ wishlist

In Stock

DESCRIPTION

A sustainable and comfortable base layer shorts for women, designed for prolonged comfort and thermal performance.

Cressi 2.5mm Core Vest Base Layer for Women

SKU: CSB25BVWLR

^$94.95

+ wishlist

In Stock

DESCRIPTION

A 2.5mm neoprene vest for women that enhances warmth and comfort during scuba diving.

Sharkskin Chillproof Men's Full Suit

SKU: SHSCFSMXLBB

~~$429.99~~ Save: $86 (20%)

^$343.99

+ wishlist

In Stock

DESCRIPTION

A versatile full-body suit offering thermal insulation, sun protection, and flexibility for all water sports.

Waterproof Body 2X Bottom, Men's Undergarment

SKU: WPGBD2XBM3XL

^$217.80

+ wishlist

In Stock

DESCRIPTION

A technically advanced men's undergarment with high thermal insulation and excellent moisture-wicking properties.

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One Piece Base Layers

One piece base layers are a key element in any diver’s or water sports enthusiast’s gear collection, offering a blend of comfort, performance, and protection that makes a real difference both above and below the surface. As the summer season reaches its peak in August, water temperatures can vary dramatically depending on your location, and spending long hours in the water—whether you’re diving tropical reefs, exploring kelp forests, or enjoying extended snorkeling sessions—can still leave you feeling chilled over time. A one piece base layer acts as a second skin, providing thermal insulation while wicking moisture away from your body, which helps regulate your core temperature and prevents that uncomfortable clammy feeling that can set in after repeated dives or swims. These garments are designed for a close, ergonomic fit, reducing drag and making it easy to slip into a wetsuit or drysuit. For those who dive frequently, the added layer helps minimize skin irritation and chafing from suit seams, while also adding a touch of warmth during early morning or late afternoon outings when the sun is lower and the water feels cooler.

Choosing the right one piece base layer involves considering a few key factors: material, fit, and intended use. High-quality fabrics like lycra, spandex, and specialized thermals are popular because they stretch to move with you, dry quickly, and resist the wear and tear that comes with saltwater and repeated washing. Some divers prefer ultra-thin, lightweight layers for tropical destinations, while others opt for thicker, fleece-lined options when planning trips to colder waters or for use beneath a drysuit. The one piece design is especially appreciated by those who want full-body coverage without the hassle of separate tops and bottoms—ideal for reducing exposure to jellyfish stings, sunburn, or abrasions from rocky entry points. If you’re shopping for someone else, base layers make a thoughtful gift for both new and seasoned divers, snorkelers, or anyone who enjoys paddle sports and open water swimming. They’re practical, versatile, and often overlooked, yet they can dramatically improve comfort and extend water time, making them a welcome addition to any gear bag. For women looking for a tailored fit and styles designed specifically for their needs, our curated selection of Women's Base Layers offers options that combine performance with comfort and style.

In real-world use, a one piece base layer becomes an indispensable companion on multi-dive days, liveaboard trips, or even when traveling to new destinations where water temperatures are unpredictable. The ease of donning a single garment streamlines your pre-dive routine, and at the end of a long day, it’s satisfying to peel off your suit and find your skin free from salt rashes or neoprene marks. Many divers recount the difference a good base layer makes when facing strong thermoclines or unexpected temperature drops—what starts as a simple piece of gear quickly becomes a trusted staple. For snorkelers, freedivers, and underwater photographers who spend extended periods at the surface or just below, the added warmth and UV protection can mean the difference between cutting an adventure short or savoring every moment. Whether you’re gearing up for a tropical getaway, prepping for colder water explorations, or simply seeking a more comfortable experience on your next aquatic outing, investing in a high-quality one piece base layer is a smart choice that pays off in both performance and enjoyment.