・[Product contents]: Saddle bag, buckle strap, adjustment and fixing hardware with elastic string.[Material]: Upper 200D polyester,Black lower part 700D polyester, built-in PP board(Thickness approx. 3mm), TPU waterproof and water repellent treatment on the entire outer material[Specifications]: Free opening, waterproof and water repellent, buckle adjustable strap ・[Fixed position]: Saddle rail, seat post[Storage function]: Main compartment only[Waterproof performance]: 10,000mm ・[Dimensions]: Total length 25-30cm, width 6-15cm, depth approximately 14cm(Opening mouth width approx. 24cm)[Capacity]: 3L ~ Maximum 3.5L [Weight]: Super lightweight approximately 122g ・●Capacity expands to match your luggage (up to 3.5L)●Waterproof and water repellent performance that does not falter even in light rain●Light weight yet maintains durability●Easy to install and doesn't take much time ・●Fashionable colors improve functionality and design●Built-in PP board structure keeps its shape firmly●Saddle bag that is not too big ・[Capacity] Capacity can be expanded by rolling the saddle bag.With a minimum of 3L, you can store various items such as necessary tools and air pump sets suitable for normal riding.It also features a wide mouth that makes it easy to put in and take out. ・[Waterproof and water-repellent function] The outer material is treated with waterproof and water-repellent TPU, and the waterproof performance reaches 10.000mm, making it waterproof to light rain level. *Not completely waterproof.