Covered ID Holder ID your bag, but keep your identity private. A covered identification card is located on the center back of the Boot Trekker. More Stories Extra Tall Boot Pockets For the racer or shredder with tall boots, SP PRO will stow your boots with… Retractable Helmet Sling Outside Where it Should be. Save the storage space and ventilate your helmet. A stretchable sling… All-Terrain Wheels Tough outboard wheel system for reliable and smooth transportation through various ground conditions.