Features Fabrics ¥ Nylon 50D Dot Dobby Ripstop Carrying system ¥ Super-breathable back in mesh fabric ¥ Ergonomic shoulder straps and waist band in breathable mesh fabric Pockets ¥ Two padded bottle holders in the lumbar belt ¥ Pockets on the waist band ¥ Safety pocket with key ring ¥ Bottle holder and pocket on shoulder straps Accessories ¥ Specific pocket for the H2 bag with rear access allowing to access the hydration bag with no need to open the backpack ¥ Loops on shoulder straps to attach pockets and additional bottle holders (not included) ¥ Carrying handle ¥ Compatible with H2 bag ¥ Chest strap ¥ Emergency whistle ¥ Reflective logos and strips ¥ Sticks holder ¥ Loop for rear safety lamp. Description Product Description It is the perfect backpack for the most demanding runners, being fully equipped. The back has a vertical extension of 47 cm which allows a perfect form-fit and balance of this backpack.