These 200ggm2 long johns with a fly are made of Terry loop Ulfrotte circular knit mean minimum seams and friction points and features a a gusset for optimal comfort. Inserted cuffs and elastic. Fabric designed for ultimate durability in workwear. Machine washable in hot (60ºC) water. Super durable. Natural , quality wool thermal wear for Canada winter cold. Machine washable in hot (60ºC) water. Dryer-safe.