Features:

• The main fabric is 900D waterproof but zipper, webbing and sewing thread are water resistant.
• Backpack exclude helmet,basketball,waterbladder,but fit full face helmet,basketball,seibertron 2L water bladder and so on.
• High strength thicken alloy zipper, Molle system backpack
• Can be used as a Hydration Bladder Backpack
• Fit different types of sports full face or half face helmet, basketball and so on.

Details:

Seibertron Helment Backpack External dimensions:19'(H) x 11'(W) x 11'(D), waist belt MAX:45 Inch,chest belt MAX:60 Inch

Huge expandable main compartment - with interior meshed enclosure for small gear

Large middle compartment - Zippered interior small gear pouches

One small compartments for smaller gear (Glasses and so on)

Side and Top cinched down gear security straps

Numerous Molle Loops

The main fabric is 900D waterproof but zipper, webbing and sewing thread are water resistant.

The zipper use High strength thicken alloy material