Abus Ultra 410 Mini Keyed U-Locks Size:5.5" Shackle These backpacks are very robust

These backpacks are very robust yet incredibly light thanks to the use of the extremely tear and abrasion resistant material Nylon 420D Oxford

Solid welded construction

the Crater Lake works as a stand-alone top on bluebird beach days and river trips

Merrell Air Cushion for impact absorption and all-day comfort

90 degree leg

Abus Ultra 410 Mini Keyed U-Locks Size:5.5" Shackle These backpacks are very robustDouble bolted shackle for extra protection against cutting and torsion attack Shackle, body and supporting elements made from special temper hardened steel for cut and torsion resistance Industry leading corrosion resistance to ensure long life Automatic keyhole cover protects against dirt and corrosion Universal bracket easily mounts to round frames 15 35mm diameter