Grapelet Motorcycle Tail Bag 24–35L Expandable ABS Hard-Shell Helmet Bag, Waterproof

The Grapelet Motorcycle Tail Bag is a 24–35L expandable hard-shell helmet bag that protects gear from rain and impact while converting quickly between tail bag, backpack, or messenger styles.

Made with an ABS hard shell, 1200D waterproof oxford fabric, and reinforced PU leather, this expandable motorcycle tail bag balances rugged protection and flexible storage. It ships with a sealed two-way PU coating, a rain cover, and multiple strap options so you can fasten it on a passenger seat, wear it as a backpack, or carry it as a shoulder bag. The reinforced stress points and quick-release buckles make installation fast and dependable for daily commutes, road trips, and off-road use.

How much can this bag hold and how does expansion work?

The bag expands from 24 liters to 35 liters via a concealed zipper panel that increases internal volume without compromising the outer hard shell. Expansion is intuitive and gives you room for a full-face helmet plus extra gear when needed.

• Base capacity: 24L for compact loads or helmet-only storage.
• Expanded capacity: 35L for added clothing, tools, or groceries.
• Reinforced seams and stress points for heavier loads.

Will my helmet and electronics stay dry in bad weather?

The combination of a molded ABS shell, 1200D waterproof oxford fabric, sealed PU-coated zippers, and an included rain cover offers strong water resistance for helmets and small electronics. The two-way sealed zipper helps reduce water entry at closure points under steady rain.

• ABS hard shell deflects splash and light impacts.
• PU-coated sealed zipper reduces seam leakage.
• Included rain cover provides an extra waterproof barrier.

How quickly and securely does it attach to a motorcycle?

Installation uses adjustable straps and quick-release plastic buckles so you can mount or remove the bag in about two minutes without tools. The design separates the zipper mechanism from mounting straps to keep loading and securing independent and reliable.

• Adjustable straps fit passenger seats, luggage racks, and flat tail sections.
• Quick-release buckles enable fast removal for rider stops.
• Separate zipper layout prevents interference between packing and mounting.

Can I use the bag off the bike and what carrying options are available?

Yes — the Grapelet tail bag converts into several carry formats using three included strap styles. Switch between a shoulder messenger, handheld bag, or backpack for city use, store runs, or walking between parking and destination.

• Detachable shoulder strap for messenger-style carrying.
• Backpack strap set for hands-free transport off the bike.
• Top handle and quick-grab points for short carries.

Who is this for: Riders who need a weather-resistant, impact-protective tail bag that adapts to different loads and carry styles. It’s a good match for motorcyclists, scooter riders, and commuters who carry a helmet and extras, as well as weekend tourers who require expandable storage and quick on/off mounting.