The Transition Backpack showcases 600 Denier Polyester construction for rugged durability and features padded, adjustable back straps, for added comfort. Designed for triathlon gear, multiple storage compartments and pockets provide race-time organization including: two large internal mesh shoe pockets for running shoes and cycling shoes, a large Outside Mesh Pocket for gear and accessories and an external helmet pocket that features safety clips and bungee straps.