Easy to put on - difficult to slip off! * Split seam sides expand - making it easy to put on the boots. * Two Velcro straps with slides fasten the boots in place. * Petite 1 1/4"; X-Small 1 3/4$; Small 2 1/4" width; Medium 2 3/4" width; Large 3 1/4" width * Toughtek® performs in wet and dry, hot and cold conditions.