Banjo Brothers

Expanding Seat Bag Large

Banjo Brothers Expanding Seat Bag Large is a 1.7L, 0.17kg0.4lb bike bag measuring 9.5×20.5×11.5cm3.5×8×4.5in.It mounts at the saddle. Specs from banjobrothers.com, checked October 2026.

Volume

1.7Lexpands to 2.1L

Weight

0.17kg0.4lb0.4lb0.17kg

Position

Saddle

Sold as

Single

Dimensions

9.5×20.5×11.5cm3.5×8×4.5in 3.5×8×4.5in9.5×20.5×11.5cm

Price

$29.99 as of October 2026

Mount

Straps

Requires

Seatpost clearance

Waterproof

No

Laptop

n/a

Opening

n/a

Warranty

Lifetime Defects in materials or workmanship for the life of the bag, repaired or replaced at the brand's discretion; liners and buckles are generally excluded.

Compartments

n/a

Bottle pockets

n/a

Material: 840 denier nylon

• Dimensions unexpanded; brand lists 105-130 cubic inches, converted to litres

Last checked: 2026-10. Prices and specs may have changed.