GORE-TEX® waterproof performance for hard-working hands For hands used to hammering throttles and pulling on oars, Simms' G4 Glove crushes circulation-killing temperatures and drops them into the drink. Featuring GORE-TEX® XTRAFIT™, these layer-constructed gloves are fully waterproof and highly dexterous thanks to form-fitting ergonomics. Stretch woven panels bolster mobility. Debossed goat leather palms, with Pittards® Oiltac overlays, deliver non-slip grip in a sleet storm. And shingled neoprene cuffs prevent encroaching water from sneaking up and into sleeves.