The Reebok 20k hockey pants is the pro level pant in this year's line of hockey protection from Reebok. They will include a couple updates and new features that were not around for last year's 11k. The Reebok 20k pants are composed of a with strong nylon with well placed stretch zones. Kidney protection comes from a molded piece of PE foam, while the spine protector and molded inserts will keep your lower back protected. NHL level thigh guards will help protect your legs. Also do not be afraid of buying this pant for a growing player, as there is a hidden zipper that potentially adds up to 1 inch of length for a growing player!