scott stevens pro model with extra protection and primaloft® insulation. the punch mittens from crab grad are one thing above all: robust. they protect your knuckles during hard slams and come with numerous reinforcements. the primaloft® insulation keeps you warm and is breathable, while the 15k dry-clawâ„¢ hipora® membrane keeps you dry. the pro model from scott stevens is rounded off with a crunch gripâ„¢ thumb that provides plenty of grip on grabs.