Seal Skinz Waterproof Gloves and SocksSeal Skinz socks and gloves use a different type of membrane called hydrophilic ("water loving"). Hydrophilic membranes are totally solid, without pores. It is therefore physically impossible for droplets of liquid water to pass through the membrane, however, it is breathable because water vapour molecules are transmitted from molecule to molecule through the membrane on the polymer chain and expelled on the other side. The driving forces are the differences in humidity and temperature between the atmospheres on each side of the film.
The internal climate, next to the skin, is hot and humid because the body is generating heat and moisture as it exercises. The external climate is much drier and cooler. Consequently water vapour is driven from the inside of the garment to the outside. As the foot gets hotter during an activity, so the film becomes more efficient at expelling moisture.
SealSkinz® 100% Waterproof Testing …
Every single SealSkinz® product is tested before it leaves the factory. The sock or glove is mounted onto a machine which subjects it to water pressure. If any product leaks, the item is rejected and diced. Every SealSkinz® product is therefore guaranteed to be 100% waterproof.
The waterproof film can withstand 10psi of hydrostatic head pressure, the equivalent of a column of water 700cm high standing on the fabric surface. This is 7 times the level required to meet European Standards for waterproof clothing.
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