Sharkskin Thermal Flex Long Pants (Men's)

Sharkskin Thermal Flex Long Pants for men fill the gap for snorkelers and divers when the water is too cool for Rapid Dry but not cold enough to justify a wetsuit or the Chillproof range. They cover the full leg in a thin, stretchy fabric that holds warmth without the bulk or buoyancy of neoprene. Ocean swimmers and surfers like them too for leg coverage with UPF50+ sun protection.

The Thermal Flex Fabric

Thermal Flex is a Hydrophobic Nanotech Compression fabric that Sharkskin says matches the insulation of neoprene twice as thick. Far Infrared (FIR) technology embedded in the fabric reflects body heat back to you and supports circulation and recovery. The Hydro-Lock finish repels water and limits absorption even when fully submerged, which cuts drag and protects the threads.

• FIR technology permanently built into the fabric, with an antimicrobial effect
• Hydro-Lock durable water repellent finish
• Soft-stitch panels that prevent chafing on long sessions
• Full UPF50+ sun protection

Men's Fit and Sizing

The men's long pants come in SML through 5XL. The body mapped compression cut fits close to the skin, and a drawstring waist lets you dial in the fit. The super stretch fabric makes them easy to pull on and off, even over wet skin.

Frequently Asked Questions

When should I wear Thermal Flex instead of a wetsuit?

Choose Thermal Flex when the water is too cool for Rapid Dry but not cold enough for a wetsuit or the Chillproof and T2 Chillproof ranges. It adds warmth without the restriction of neoprene.

Are Thermal Flex pants buoyant?

No. They avoid the extra buoyancy of neoprene, so they won't change your weighting the way a thick suit would.

How warm are Thermal Flex Long Pants?

Sharkskin states Thermal Flex gives the same insulation as neoprene that is twice as thick, while staying far more flexible.