Product Details: 

Brand: Rockbros

Condition: Brand New

Color: Black / Black Green

Material: Black, Black green: Nylon + EVA

New black: Waterproof fabric

Weight: Black, Black, Green: About 1170G

A6 Expand capacity: About 35L (For expansion, it is about 10L)

(Black, black, green are not waterproof bags, but will come with free rain cover)

Characteristics:

Quick release system, be easily fixed with seat posts

Reflective band to keep bikes safe

Pockets on each side can stretch and lengthen, greater capacity

2 PE Board in the bag

Multi-function, ultra-large capacity, Waterproof

Safety multi-function shelf bag

Large capacity, expandable

About 35L after expansion