Waterproof Bike Rear Seat Bag | 20L Large Capacity Rack Pannier Pack

Dry Gear, No Matter the Downpour

Stop arriving at work with a soggy laptop and damp clothes. This 20L Waterproof Bike Pannier is built for the hardcore commuter who doesn't check the weather app before heading out. With a rugged, roll-top design and heat-sealed seams, it creates a literal dry-bag for your gear. Whether you're dodging puddles on the way to the gym or hauling groceries home on a rainy Tuesday, this bag keeps your kit bone-dry and your ride balanced.

Key Features

• 100% Storm-Proof Roll-Top: Don't trust a zipper in a deluge. This bag uses a classic roll-top closure and heat-welded seams to lock out every drop of water, ensuring your electronics and gym clothes stay perfectly dry.
• Jumbo 20L Commuter Capacity: Everything in one place. The spacious interior is sized to handle a 15" laptop, a change of clothes, and your lunch, making it the ideal "set and forget" bag for your daily trek.
• ** Pannier-to-Gym-Bag Transition**: Take it with you. When you reach your destination, the quick-release clips let you pop the bag off in seconds, while the included shoulder strap turns it into a comfortable carry-all.
• Universal Rack Mounting: Fits your bike. The adjustable mounting hooks are designed to grip onto almost any standard rear rack, with a lower "lock" strap to prevent the bag from swinging into your spokes.

Specifications

• Capacity: 20L Total (Expandable Roll-Top)
• Material: Heavy-Duty Waterproof PVC Tarpaulin
• Visibility: High-Reflective Safety Graphics
• Mounting: Tool-Free Adjustable Rack Hooks

Why Buy From Us?

• Q: Will this hit my heels while I'm pedalling?
• A: It depends on your bike! If you have a compact frame or short chainstays, a large 20L bag can sit close to your feet. To avoid the dreaded "heel strike," make sure to use the adjustable clips to slide the bag toward the back of your rack. If your heels still touch, it might be time for a rack extender!