Make sure this fits by entering your model number. LARGE CAPACITY: Great for packing swim training equipment, snorkeling gear, beach items, and the pool, the TYR Big Mesh Mummy backpack features an updated design with 20% more capacity for storing all your swimming gear. QUALITY DESIGN: Lightweight and functional, this athletic backpack features a spacious main compartment for storage, small zip compartment, and mesh venting for faster dry time and optimal drainage.