This bike triangle frame bag is made of upgraded polyester fabric, water-resistant strong helps protect stored item. This new type bicycle triangle bag is specially designed for outdoor sports enthusiasts. With Compact and convenient type design, simple lines and fluent streamline, you can also put some small sport accessories in the bag, just like glasses, repair tools, wallet, etc. Unlike other triangle bike bag /bicycle triangle frame bag which mostly don't have compartments, this bicycle accessory offers multi storage inside to organize your things.