There velcro straps is a little bit short at first , a father received the goods and complained that the Velcro straps can not hold his bike tube frame, although he can put his 14.9-inch long bike pump into the bag. The tube frame circumference is 4.5 inch originally , it is 7 inches after he added shockproof sponge, because he usually take his girl upon the tube frame to riding outside at weekend. We decided to added 2 inches Velcro for the triangle bag, which could be tied up to a 9-inch long bike tube frame. (if it is too long, you can cut the spare part)

Fit for 16inch,17inch ,18inch , 19 inch and above bike frame

High Quality 900D Fabric Anti-wear

Reflective logo , safety riding at night

Internal net bags, classified storage more conveniently

Waterproof body + waterproof zipper = Highly water resistant

Quick release from velcro

The width is appropriate, will not hinder you when cycling

Large capacity, suitable for urban rides and long distance tours