Sharkskin Mens Chillproof 2025 Long Pants

Quick answer: Sharkskin Chillproof Long Pants are thermal dive pants made from Sharkskin's windproof, three-layer composite material with a soft fleece lining. Wear them on their own, under a drysuit or wetsuit, or paired with a Chillproof top. Men's sizes run up to 4XL.

Why bigger divers look at it

Two-piece thermal wear is a quiet win for bigger bodies. Most of us aren't the same size on top and bottom, and a one-piece suit forces a compromise somewhere. With separate pants and a top, you size each half to your actual body, then add or skip layers as the water changes.

Sharkskin's men's chart goes well past where a lot of brands stop. Here are the two largest sizes offered:

• 3XL: 276-298 lb, waist 44.1-46.5 in, height 72-75 in
• 4XL: 298-320 lb, waist 46.9-49.6 in, height 73-76 in

The high rear waist adds warmth and coverage where pants tend to ride down when you bend or kick.

What the material does

Chillproof is made for the water and blocks windchill, which matters on a boat ride between dives. It's neutrally buoyant, so it won't change your weighting much. It resists odor, itch and microbes, and the wicking fleece inside keeps you warm even when you get wet. Stirrups hold the legs in place and help when you're pulling a wetsuit or drysuit on over the top. Worn dry, the pants also protect against chafing.

What you get

• Windproof, aquatic-specific 3-layer composite thermal material
• Soft wicking fleece inner liner
• Neutrally buoyant, anti-microbial, odor and itch resistant
• Stirrups to keep the legs in place
• High rear waist for comfort and warmth
• Grey and white logos that pair with any top color

Options

• Men's sizes: SM, MD, LG, XL, 2XL, 3XL, 4XL

Before you buy

Measure your waist, chest, height and weight and match them to the chart. If you'll wear the pants under a wetsuit, Sharkskin says they should be fitted, firm on the body and not bunching. Read How to Prevent Wetsuit Chafing for Good and Drysuit Wetsuit Comparison: Which Fits Your Dive?. More options: Extended-Size Wetsuits, Drysuits & Dive Apparel (XXL and Up).