Premium Material:The Bike Rear Seat Bag Is Made Of Nylon And Tpu,All-Round Reflective Strips Add Better Visibility In Low Light.The Seam-Sealed Waterproof Zipper Is Durable And Sturdy,Helping To Waterproof And Protect Your Belongings From Raindrops And Humidity. Product Size:With The Size Of 15*10*7.5Cm,The Bicycle Saddle Bag Is Spacious Enough To Hold All Your Necessities, Such As Keys,Mobile Phone,Wallet,Small Bicycle Accessories,Tire Repair Kit Or Multi-Tool,Etc. Reflective Strip Design:The Reflective Strip With Logo On The Bicycle Saddle Bag Can Improve Your Visibility In Low Light Or Dark Conditions And Provide A Safety Signal When Riding At Night. Easy To Assemble:Comes With A Quick-Release Mounting Clip To Securely Fix The Bag To The Seatpost,Which Can Be Installed And Removed Quickly And Easily Without Tools. Wide Use:This Bike Repair Kit Has 1.2 Liters Of Space To Store Your Phone,Multi-Tools,Keys,Money,Gadgets,And More.Store Collected Small Items For Easy Access.Seat Pockets Are Small And Light For Long Trips.