Bison Extreme Flex TTMC Waterproof OverallExtreme Flex Rain Overall is over 50% lighter than a comparative rain jacket and bib trouser combo Stay dry for 12hrs in our Bison Extreme Flex Rain Overall 300D 3 layer mechanical stretch fabric 30,000mm Waterproof rating, breathability up to 4,000g m2 24HR Seam free shoulder design means a better range of motion in the arms Neoprene storm cuffs with velcro adjustors on sleeves, ideal for preventing water ingress with arms overhead Articulated knees