These are top quality gaiters from Rab. The light weight fabric is great for those that don’t like ‘em thick n hefty. The band which goes under the boot is a light and strong plastic that can adjust the height over your boot via velcro inside. if you have decent (large) calves, these provide ample coverage and can be adjusted down for those with slender pins! The front of the gaiter has full length Velcro along with a popper fastening at the front. There is also an elastic cord for finer adjustment. Functional, feel good and look good too.