5L Large-Capacity Outdoor Cycling Backpack Lightweight Riding Backpack for Running Hiking Mountaineering VERSATILE -- Suitable for all kinds of activities include riding, running, hiking, mountaineering, outing, excursions, etc. LARGE-CAPACITY -- Spacious compartments with 5L loading capacity is large enough for storing most daily needs such as laptop, tablet, purse, books, cellphone, water-bottle and umbrella. SAFETY -- Designed with reflective strips on the back and the front that is conspicuous in the dark straps to keep you . BREATHABLE -- Excellent air ventilation system consist of porous mesh back and comfortable cellular cushion prevents stuffiness and releases pressure to your back. LIGHTWEIGHT -- Quality polyester material is endurable and light, this professional cycling bag design is different from other backpack that is with larger figure, it is simple and super lightweight that is good for activities. Note: The product includes a backpack only, other articles in the pictures are not sold. Specifications: Package Weight: 155g / 5.4oz Color: Black / Red / Gray (Optional) Package Size: 40 * 23 * 2cm / 15.7 * 9 * 0.7in Capacity: 5L Material: Polyester Size: 39 * 17 * 1cm / 15.3 * 6.6 *0.3in This is a professional cycling backpack with large capacity capable for storing most necessaries for activities, suitable for riding, running and mountaineering. Package List: 1 * Cycling Backpack(the color of sent by random)