Involve, entangle, implicate imply getting a person connected or bound up with something from which it is difficult to extricate himself or herself. To involve is to bring more or less deeply into something, especially of a complicated, embarrassing, or troublesome nature: to involve someone in debt.
GORE-TEX is an amazing breathable, waterproof textile found in high-performance clothes such as walking/hiking boots and mountain coats. Unlike ordinary synthetic textiles like nylon, GORE-TEX stops rain from getting in but lets perspiration out.
Mountaineering backpacks have evolved from canvas to nylon to PTFE. Goretex is a PTFE-based laminated fabric used for wet-weather gear because the 'holes' between the fibres are too small to allow water in, but coarse enough to allow water vapour out.