A compact 1L bike frame bag made from waterproof TPU600D fabric with seamless welded construction and a waterproof zipper. Designed for all frame types, it supports both strap and M5 screw installation. The reinforced base improves durability, while the slim shape prevents leg rubbing during rides. Ideal for carrying daily cycling essentials such as a phone, energy gel, inner tube, tire lever, CO₂ cartridge, coins, and charging cable.