AFISHTOUR Waterproof Bicycle Saddle Bag - 13L Roll-Top Closure Cycling Bike Seat Bag Under Seat Storage Pack for Mountain Road Bike Travel (Yellow) Waterproof Duffel Bag Always ensure the roll-top closure

Always ensure the roll-top closure is properly sealed to maintain the bag's waterproof integrity

Adjustable Volume: The roll-top closure system allows you to adjust the volume(30L to 35L) of the backpack according to your needs

Comfortable & Ergonomic Design: The backpack is designed with user comfort in mind

you can accommodate different amounts of gear while still maintaining a secure and waterproof seal

Note: It's important to note that while the AFISHTOUR Heavy Duty Waterproof Dry Bag Backpack offers excellent waterproof protection

AFISHTOUR Waterproof Bicycle Saddle Bag - 13L Roll-Top Closure Cycling Bike Seat Bag Under Seat Storage Pack for Mountain Road Bike Travel (Yellow) Waterproof Duffel Bag Always ensure the roll-top closure