Waterproof Parka Technology

Detailed description of our fleece fabric….

Our fleece that goes into every Boat Coat, Swim Parka and Dive Parka we make is made exclusively for our use according to our exact specifications. Fleece is a soft, lightweight, warm and comfortable fabric. It is hydrophobic, holding less than 1% of its weight in water, it retains much of its insulating powers even when wet, and it is highly breathable. Made from 100% polyester, which is usually recycled materials, it is one of the most technical fabrics on the market. Surf-fur fleece gives the wearer maximum protection from blustery conditions in a lightweight packable fabric. These fabrics combine the warmth of fleece with a 
100% windproof, waterproof, breathable 
barrier, eliminating the need for a windbreaker or other additional shell. It is a good alternative to wool. 

More information for the Scientists….

If it is breathable, how is it waterproof? Well, the fabric is actually two layers of fleece bonded together by a membrane called Polytetrafluoroethylene, or PTFE, which allows a small amount of air through the fabric (15cfm) to substantially improve breathability, without significantly compromising the fabric's warmth, reducing the tendency for heat stress buildup during aerobic activities. A water resistant outer surface and an inner surface treated to wick, provide all-in-one comfort and protection.

(FYI- Light-weight fabric is approximately 315 gsm, Mid-weight fabric is approximately 341 gsm, and heavier fabric is approximately 397 gsm)

Even more information for our Mensa customers….

Given the properties of water, a large droplet of water would not be able to fit through the miniscule opening of the PTFE, but water vapors (hence perspiration) will be able to escape through the holes allowing the fabric to breathe.