"This Backpack Tour offers a greater capacity compared to Backpack (50). This backpack is designed exclusively for biking and puts the needs of bikers first and foremost. It can fit small accessories needed for cycling, including a portable pump and helmet. Bottle holders are also placed on both sides. The back side has an uneven frame to prevent stuffiness and keep you comfortable. The variously positioned retroreflective strips ensure nighttime visibility. Capacity: 26 liters (main pocket: 19 L, outer pocket: 7 L) "