Shimano RD-M310 Rear Derailleur Altus 7/8-Speed Bike Mud Guards The dri liner is a

The dri liner is a waterproof elastic PU insert and the liner is a 140 g/m2 brushed polyester quality

and it is suggested that you add them before leaving

this is a versatile beginner bag

stainless-steel armour that can handle taking a tumble

Shimano RD-M310 Rear Derailleur Altus 7/8-Speed Bike Mud Guards The dri liner is aThe Altus M310 is an affordable but high performing rear derailleur. Ideally suited to a 7 or 8 speed drivetrain, it has enough capacity to handle a double or triple crankset. With its light action design, teflon coated bushings and efficient spring, this derailleur is perfect for leisure cycling and touring.