Basecamp Bike Accessories Saddle Bags, Waterproof Rear Strap-On Bike Saddle Bag for Mountain, Cycling Bike Bags Under Seat Bag Bicycle Pouch Seat Wedge Pack Saddlebags forRiding Travel [BASECAMP BIKE SADDLE BAG] Large Storage Space: Sized 3.7x7.1x3.5".this bike saddle bag can hold wallet + repair tools + mobile phone and still have extra room.The fabric is waterproof,thick,durable,With padded inside,better shape and better protect your belongings if you crash your bike.The zipper pocket is deep and can fit a standard man size wallet comfortably,keys,sunglasses and other small things.Suitable for mountain bike and road bike. [FASHION DEESIGN ] Arc plastic bones shaped,stereoscopic and stable design,effectively avoid vibration.Featuring a wedge shape, the bike seat bag has a low air resistence design.No excessive or clumsy straps, no protrusions. Curve shaped zipper opening,easy to take and well protect your goods,and the inner net bag can help classify your items properly.A convenient Velcro design can attach quickly to the seat post,and an innovative quick-clip buckle can safely fix to the bike's saddle. [WATER-PROOF MATERIAL] Made of sturdy,durable and rainproof material.which is very convenient and comfortable.this bike saddle bag is water resistant,preventing inside items from wetting if raining.Provide triple protection when riding at night:1,the reflective serging avoiding the dangerous from the left and right side;2,the reflective rear strap warning the car driver behind you;3,the rear belt for mounting tail light. [EASY ACCESS OPENING BIKE SADDLE BAG] A large and easily accessible opening.Unzip and everything you need is at your finger tips.No more trouble reaching your hand into a pocketful of items to find the only one stuff you do need. [ONE-CLICK ATTACHING & DETACHING] Attaching this saddle bag to your bike with one click and detach in one second.So you can bring your saddle bag with you when you have to leave your bike to do something else.