The Sharkskin Chillproof Long Sleeve Full Zip Top – Men’s is the ultimate thermal layer for all watersports and diving. Made with Sharkskin’s innovative 3-layer Chillproof fabric, this top delivers the warmth of a 2.5–3mm wetsuit while remaining lightweight, breathable, and neutrally buoyant. The full-length front zipper makes it easy to put on and take off, even when wet, and allows you to adjust ventilation for changing conditions. A high collar adds extra warmth and wind protection, making this one of the most versatile Chillproof garments available.
About Chillproof
Chillproof is a purpose-built 3-layer composite material that delivers the warmth of a 2.5–3mm neoprene wetsuit without the bulk or drawbacks. It is windproof, breathable, and extremely comfortable. Wear it under a wetsuit for extra insulation, or as a stand-alone garment for all kinds of watersports—from scuba and snorkeling to paddleboarding, sailing, and more.
Key Features
- Full-length front zipper for ventilation and easy donning/doffing
- 3-layer Chillproof fabric equals 2.5–3mm neoprene warmth
- Thumb loops help secure sleeves when layering under a wetsuit
- Soft hollow-fiber fleece lining for warmth and moisture control
- 100% windproof & breathable membrane blocks windchill
- Durable water repellent finish sheds water
- 4-way stretch for unrestricted mobility
- Antimicrobial, odor and itch resistant
- Saltwater-resistant seams for long-lasting durability
- Neutrally buoyant – no extra dive weight needed
- UPF50+ sun protection
- Available with blue side panels or in all black
Perfect For
- Scuba diving & snorkeling
- Jet skiing & paddle sports
- Board & wind sports
- Sailing & boating
- Layering under wetsuits or drysuits
Related Underwater Gear Categories:
Specifications
| Product | Sharkskin Chillproof Long Sleeve Full Zip Top – Men’s |
| Intended Use | Thermal base layer under wetsuits or drysuits, or worn as a stand-alone top for watersports and boating |
| Construction | 3-layer Chillproof composite:
|
| Thermal Performance | Equivalent warmth to a 2.5–3 mm neoprene wetsuit without buoyancy or bulk |
| Design Features | Full-length front zipper for ventilation & easy donning/doffing High collar for added insulation Thumb loops to keep sleeves secure under wetsuits |
| Stretch & Mobility | 4-way stretch for unrestricted movement |
| Water Repellency | Durable Water Repellent (DWR) finish sheds water |
| Wind Protection | 100% windproof middle membrane blocks windchill |
| Buoyancy | Neutrally buoyant — no extra weight required for diving |
| Sun Protection | UPF50+ |
| Comfort & Hygiene | Antimicrobial, odor- and itch-resistant; designed for long wear |
| Seams & Thread | Saltwater-resistant seam thread for durability |
| Colors | Black with Blue side panels, or All Black |
| Men's Sizes | XXS–5XL — see size chart below for measurements |
| Eco Commitment | Biodegradable packaging, minimal waste production, long-lasting design |
| Warranty | 2-year workmanship guarantee (excludes fading/degeneration from chlorine or sunlight exposure) |
| Shipping Weight | Approx. 1.4 lbs (0.65 kg) |
What's in the Box
- 1 x Sharkskin Chillproof Long Sleeve Full Zip Top – Men’s
- Eco-friendly packaging
How to Properly Fit and Wear Sharkskin™ Garments
Under a Wetsuit 
When wearing Sharkskin™ beneath a wetsuit, ensure the garment is snug and well-fitted to your body to prevent bunching or discomfort under the suit.
In and Out of the Water
For fully submerged or mixed wet/dry activities—SCUBA, snorkeling, surfing, foiling, wakeboarding, kiteboarding, windsurfing, and performance sailing—choose a firmer fit for best performance.
Out of the Water
For SUP, surfski, recreational kayaking, snow sports, sailing, or as thermal wear for biking and other outdoor activities, a slightly looser fit can improve comfort and rotation.
Sharkskin™ Rapid Dry Rash Shirts
Rapid Dry tops are designed to be worn slightly loose—similar to a favorite T-shirt.
Fit Tips
- Looser Fit: Size up or choose the higher end of the sizing scale.
- Tighter Fit: Choose the lower end of the sizing scale for a firmer fit.
- Chillproof / T2 Chillproof: Zip at the narrowest waist point, pull the top down, then continue zipping.
- Different Top / Bottom Sizes: Measure separately—don’t assume the same size.
- Tall & Slim: Prioritize a firmer fit even if sleeves are slightly shorter.
Men's Size Chart (Imperial)
| MENS | XXS | XS | S | M | L | XL | 2XL | 3XL | 4XL | 5XL |
| HEIGHT | 59.1" - 61.4" | 61.4" - 63.8" | 63.8" - 66.1" | 66.1" - 68.5" | 68.5" - 70.9" | 70.9" - 73.2" | 73.2" - 75.6" | 73.2" - 75.6" | 73.2" - 75.6" | 73.2" - 75.6" |
| WEIGHT | 99.2lb - 121lb | 121lb - 143lb | 132lb - 165lb | 154lb - 187lb | 176lb - 209lb | 198lb - 231lb | 220lb - 254lb | 231lb - 265lb | 243lb - 276lb | 254lb - 287lb |
| CHEST | 33.1" - 36.2" | 34.6" - 37.8" | 36.2" - 39.4" | 37.4" - 41.3" | 39" - 42.9" | 40.9" - 44.9" | 42.9" - 46.9" | 44.9" - 49.6" | 47.2" - 52" | 49.6" - 54.3" |
| WAIST | 28.3" - 31.5" | 30.7" - 33.9" | 32.3" - 35.4" | 33.5" - 37.4" | 35.4" - 39.4" | 37.4" - 41.3" | 39.8" - 43.7" | 42.1" - 46.1" | 44.5" - 48.4" | 46.5" - 51.2" |
Why Buy from Bluewater
1. Proof of Expertise
- Authorized Sharkskin dive gear dealer — full manufacturer warranty.
- Founded and staffed by active divers, underwater photographers, and explorers.
- Decades of combined hands-on experience with the gear we sell.
- We test and use most of the equipment ourselves before recommending it.
2. Risk-Free Purchase (See Terms Of Service)
- 30-day, hassle-free returns (unused condition).
- Secure payment with trusted gateways (credit card, PayPal, etc.).
- All products shipped in factory-sealed boxes (unless stated).
- Transparent policies — no hidden fees or fine-print surprises.
3. Fast & Reliable Delivery
- Free U.S. shipping over $200 for Photo Gear & $50 for Dive Gear.
- Same-day dispatch on in-stock orders placed before 12pm.
- Worldwide shipping options with reliable carriers.
- Real-time tracking updates sent straight to your inbox.
4. Extra Value at No Extra Cost
- Lifetime product support by email, phone, or in-store.
- Setup help & usage tips tailored to your needs.
- Exclusive buyer’s guides, tutorials, and dive trip invitations.
- Early access to special promotions & new releases.
5. Social Proof & Community
- Thousands of satisfied divers & underwater photographers worldwide.
- 5-star average product & service ratings.
- Active in dive events, conservation projects, and photography competitions.
6. Personal Connection
- Direct line to our in-house experts — no outsourced call centers.
- Friendly, passionate staff who speak “diver” fluently.
- We care about your whole adventure, not just the sale.
We offer lifetime support with all purchases.
Please call or email us with any questions; our knowledgeable staff would love to assist you.
