Topeak WeatherProof DynaWedge Seat Bag - Large Model-Shimano (D-Type 4-Piston) and is compatible in mounting

and is compatible in mounting all standard (non-Full Mount) derailleurs from SRAM

and a full metal edge provides extra hold in icy or hard pack conditions

while using the machine to automatically adjust the resistance to pre-programmed levels

Weight 50g bag and strap | 18g Mount

Quick slide on/off attachment fits frames without fender eyelets

Topeak WeatherProof DynaWedge Seat Bag - Large Model-Shimano (D-Type 4-Piston) and is compatible in mountingA weatherproof seat pack made to battle the nastiest weather out there Standard model designed for road bikes and gear while the large size is more for mountain bikes and able to store a 29 inch tube Features water proof zippers and Topeaks Rail Wing system to securely attach the bag while also allowing for access TECH SPECS model Weatherproof Dynawedge mount strap size large capacity 37 cu in (0. 6L) dimensions weight color black