Merrell offers its Merrell Men's Mercer Backpack in Scarlet Red for $55. Coupon code "SALE30" cuts it to $27.99. With free shipping, that's the lowest total price we could find by $27. It measures 11" x 17.7" x 7.1" and features an elastic Lycra side pocket with room for a water bottle, internal organizer panel, padded shoulder straps, chest strap with integrated safety whistle, inside organizer, and zipped front compartment. Deal ends May 16.