MAX Storage 50 Liters:  With 12 pockets, padded laptop compartment (up to 18.5″), holds small oxygen tank, respirator.  Lower front opening to main compartment.

Backpack convertible straps included:

*Pink and Black models have optional air-mesh padded shoulder pads, whereas the Gray, Navy, and Purple variants include rubber shoulder pads.

… Do you need a RAIN COVER?  (Select Large)