This bicycle bag is designed with a roll-top closure which can adjust the capacity from 3L to 10L; with waterproof TPU interior, your valuables will stay dry in rainy days. It is easy to mount and fix on your bicycle seat post, great for long distance riding journey.

Features:
Roll down closure system compresses to 3L for daily use, or expands to 10L for multi-day trips.
Waterproof TPU interior with roll-top closure keeps your valuables dry.
Elastic rope increases bag capacity and keeps your water bottle, clothes or maps securely on the bag.
Reflective tape for increased visibility and night safety.
2" wide adhesive strap provides quick and stable mounting on the seat post.
Adjustable webbing with quick-release buckle to keep the bag firmly fastened to the saddle.

Specifications:
Exterior Material: Ripstop nylon fabric
Interior Material: Double layer waterproof nylon TPU
Dimension: 40 * 11.5 * 14.5cm / 15.7 * 4.5 * 5.7in
Capacity: 3L-10L
Weight: 540g / 1.2lb

Package List:
1 * Bicycle Saddle Bag