This is the standard XR series unisex model, for adults between 70-200 lbs (32-90 kg). It is also suitable for teens in this weight range. The MULTI-SIZE liner with its expandable neoprene toe, adapts perfectly to several sizes. It features the new IPS spring which offers: - a better performance - increased comfort - new customizing possibilities. - a longer life span - a 2 way safety feature with a locking system It has a durable hard shell boot with a comfortable, removable liner which can be machine washed.