Roswheel 14892 3 in 1 Multifuction Bicycle Expedition Touring Cam Pannier Materials: 1000D reinforce polyester with PU coating, water resistant, solid and durable Large Capacity: the total volume up to 37L (about 10 gallons), ideal storage for daily essentials, biking gear, cycling accessories and multiple day supplies Angled corner design: angle design for two side bag ensures enough pedaling space Quick install and release: tool free installation with Velcro straps. Compatible with the most bicycles, such as mountain bikes, road bikes and commuter bike Safety: reflective handles, two side large reflective logos for increasing visibility in low light