SPEEDO The One Backpack 25L -Ergonomic 3D molded back panel easily converts from pack to chair. -The 'S' zip configuration provides easy access from top to bottom allowing the pack to open up like a book. -Ergonomic 3D molded shoulder straps. -Offset laptop sleeve to protect laptop corners. -Athletic organization. -Zippered compartments. -Mesh drawn cord pouches. -Lined pockets. -Ventilated side pouch for convenient storage and access. -Removable dirt bag? keeps dirty/wet gear separated from clean garments. -Primary zips are highest quality YKKu00ae zippers for reliability. -Nylon baby Ripstop material offering the highest durability and abrasion resistance. -Dimensions: 17'' 12'' x 9''