SAHOO Bastion Frame Bag

More miles. More gear. Zero compromise.

The SAHOO Bastion fills your entire frame triangle with 4 litres of weatherproof, organized storage — purpose-built for riders who go further. Whether you're deep into a gravel adventure, loaded up for a bikepacking overnighter, or commuting with everything you need for the day, the Bastion carries it all without complaint.

Why Riders Choose the Bastion

Waterproof Zipper with Taped Seams The Bastion features a waterproof zipper and taped seams — a combination that keeps your gear genuinely dry, not just shower-resistant. Full tape sealing means no moisture sneaks in through stitch lines, even in sustained rain or deep puddles.

600D TPU Composite Fabric + Hypalon Construction Built from 600D TPU composite fabric combined with Hypalon — a material trusted in whitewater gear and dry bags for its extreme durability and resistance to abrasion, UV, and weather. This bag is built to outlast the trails you ride.

4 Litres of Full-Triangle Capacity At 40 × 23 × 6cm with a 4-litre capacity, the Bastion makes full use of your frame's triangle — the largest, most stable storage zone on any bike. Carry a full toolkit, layers, food, a hydration bladder, or everything you need for a day ride, all in one place.

Tool-Free Setup Adjustable straps and tool-free setup mean you can mount the Bastion to virtually any frame in minutes — no drilling, no hardware, no permanent modifications. Move it between bikes just as easily.

Lightweight at Just 204g A 4-litre bag that weighs only 204g — the Bastion gives you serious storage capacity without the weight penalty. Every gram here is working hard.

Perfect For

• Bikepacking and multi-day adventure riding
• Gravel and endurance cyclists
• Loaded commuters carrying daily essentials
• Road riders who need more than a saddle bag can offer

What Fits Inside

A full toolkit and spare tubes, a packable rain jacket, snacks and nutrition for long rides, a hydration bladder, a phone and wallet, a portable charger, arm warmers, sunscreen — the Bastion handles it all.