The shimano r260 spd sl shoes are ideal for getting a truly custom fit to your shoes due to their heat moldable custom fit material in the heel and upper plus insoles that allow you to customise your comfort from your own home gain the perfect fit on every ride with the micro adjusting buckle strap plus a velcro style hook and loop closure strap which positions to assure snug comfort relieving any pressure points which can affect your ride and start cramp a carbon sole provides great power