Product information ROCKBROS is an original brand founded by cycg enthusiasts. The goal of ROCKBROS is to offer high-quality products at an affordable price for every customer who loves cycg and outdoor sports. Specifications: Brand: ROCKBROS Material: 840D nylon + TPU Color: black, reflective Dimensions: 44.5 * 6 * 16 cm Capacity: 4L Weight: approx. 298g 5 adjustable Velcro straps Suitable for MTB, touring bike, electric bike Large capacity: This triangle bag has a large capacity (approx. 4L) and is extended, you can put a lot of long things in it, e.g. water bottle (1.25L), pump. Water Resistant: The high-quality outer material made of nylon fabric and the TPU inner material with seamless processing offer comprehensive protection for your things. Adjustable Velcro straps: With 5 Velcro straps and 11 mounting holes, you can mount the bike bag securely and easily in the right position on your bike frame.