I offer a few times used snowshoes of universal size of the brand Morpho.You can adjust the snowshoes to your shoe size very quickly, easily and safely with the help of toothed belts.The snowshoes won't slip sideways or backwards thanks to:grooved sides along the entire lengthaggressive two-tooth tool steel cat6 hard steel spikesThanks to the adaptable body of the rotating mechanism, the snowshoes are suitable for almost any type of shoe, from trekking to skiing or snowboarding.Adjusting the Morpho Classic snowshoes:The rotating mechanism allows for the adjustment of 3 positions:walking in mild terrain .... free heelwalking up a steep hill ... free heel, heels extended to reduce strain on the calf musclewalking / jumping from the hill ... the heel is locked