ROCKBROS Top Tube Bicycle Frame Small Item Storage Case for Road Holds Smartphone and Perfect for Bag, Waterproof, Easy-to-Attach Bag, Bikes,

[High Performance] Made of high-quality PU leather, it is waterproof, has a hard feel, is resistant to breakage and deformation, and protects the contents. 【Easy to Install】The Velcro strap holds the unit securely and allows for easy transfer from one bike to another. The Velcro strap attachment is compatible with most bikes. [Excellent Stability] The bag has two attachment points, one on the front and one on the frame, for better stability. The design matches the frame, so the bag won't touch your knees while cycling. *The new double zipper type has three attachment points. [Lightweight and spacious] Compact size and ample capacity. Lightweight, easy to carry, and won't cause extra pressure. You can also place your keys, smartphone, credit cards, wallet, coins, flashlight, etc. [Size] Single zipper type: S: Approx. 21.5*5.5*8.5cm, L: Approx. 23.5*6.5*10.5cm. Double zipper type: S: Approx. 23.5*6.5*9cm, L: Approx. 25.5*6.5*10.5cm. Suitable for commuting, school, cycling, travel, and other outdoor activities. Also makes a great gift. Product Description: Brand: ROCKBROS Condition: New Color: Black Size: 21.5*5.5*8.5cm/23.5*8.5*10.5cm Features: Waterproof, easy to install, large capacity