This new type bicycle triangle bag is specially designed for outdoor sports enthusiasts. With Compact and convenient type design, simple lines and fluent streamline. Features:waterproof, Hook & loop adhesive tape strap design, easy to put on and take off. Reflective strips on both sides ensure a safe ride at night. Right angular design, suitable for various kinds of bikes. It is suitable for storing important accessories: repair tools, flash lights, wallet, mobile phone etc. 7.87" L x 7.28" W x 1.57" H