ADJUSTABLE & FOLDABLE: Bikepacking bag maximum capacity 14L. Easy to hold your tools and short distance items. Roll-top closure design adjust the length of saddle bag to meet your different capacity needs.Why spend much money on several sizes of bag instead of this adjustable capacity saddle bag ? WATERPROOF & EASY TO CLEAN: Composite 3 layer bike bag is waterproof. INNOVATIVE material made this large bike saddle bag so that dirt or mud can be clean with a wet cloth EASY TO INSTALL: Fixed buckle with straps secure hold your bag under seat. No tools needed suitable for variety bikes, road bike, mountain bike, dirt bike, bmx, mtb. REFLECTIVE straps increase your night visibility during night cycling. Bike Saddle bag can be used as FENDER if rains heavily reduce the muddy water splashing on your cloth. Product Dimensions: Build in steel around the using panel keep the bag stay in shape and protect items from extrusion. Enjoy your cycling journey no matter sunny or rainy.