Bicycle Saddle Bag Under Seat 3D Shell Cycling Seat Pack For Mountain, Rockbros. SPECIAL SHAPE and UPGRADE STRAPS:3D shell saddle bag with wave cushion provides inside shock resistant protection if fell out.Upgrade straps make up for the deflective old ones and support lifetime warranty RAINPROOF:Waterproof fabric with taped zipper for rain.Do not soak this seat bag in the water for a long time( stitches are not waterproof ) EASY TO INSTALL:2 stickup straps and a rubber buckle simplify mount system.Moreover , it keeps bag securely attach to seat post NIGHT VISIBILITY:Reflective strap around the seat bag to increase night visibility while night cycling.Taillight hook compact space on the seat post ( Taillight doesn't include in the package ) QUALITY GUARANRTEE and friendly customer service. Any questions during using contract RockBros Bicycle with pictures.ARTISTIC:Delicate details- mesh pockets , structured inside can hold cashes ,keys , snack bars and other small repair tools (W 3.22 * L 9 * H 3.93 inches)