Here's what other sites are saying:
This shirt combines the warmth of polyolefin with the thickness and core warmth of neoprene. 1.5mm neoprene on the chest and back, polyolefin on the shoulders and underarms. This shirt can be worn alone as a warm water core warmer/surf jacket or layered under a wetsuit for added thermal insulation.
- Altrec Outdoors
This shirt can be worn alone as a core warmer or layered under a wetsuit for added thermal insulation. Great for cooler weather paddling. Should fit snug.Benefits of Polyolefin:Wicking- Polyolefin material wicks moisture away from the skin more effectively than any other fiber, keeping the wearer warm and dry.Superior Insulation- Polyolefin has the highest insulating capacity of any fiber, natural or man-made.Warmth without bulk while being extremely durable.Will not fade when exposed to sunlightWashable and care-free.Does not retain odors.Style has either a white and blue hyperflex logo on chest with black stitching or is all black with white stitching. Sorry No Choice.
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