OXA Home via Amazon offers its OXA 40-Liter Hiking Hydration Backpack in several colors (Orange pictured) for $38.99. Coupon code "HDIOAYW7" drops it to $23.39. With free shipping, that's $8 below our mention from last month, $57 off list, and the lowest price we've seen. It features adjustable shoulder straps, 2-liter water bladder, and rain cover.