Product Details:

Condition: Brand New
Color: Black/Black Green

Material: Black,Black green:Nylon EVA
New black:Waterproof fabric
Weight: Black,Black green: About 1170G
Extend capacity: About 35L(Before extending ,it is about 10L)
(Black,black green are not waterproof bags, but will come with free rain cover )

Features:

Quick release system, easily be fixed with seatposts
Reflective strap to keep cycling safe
Pockets on each side can stretch and extend,larger capacity
2 PE Board inside the bag
Multi-function, ultra-large capacity,Waterproof