REI Outlet offers the Burton Day Hiker 20L Backpack in Black Bobber Plaid for $24.73. Opt for free in-store pickup to avoid the $5.99 shipping charge. That's the lowest price we could find by $14. It features an ergonomic shoulder harness and back panel, waist strap, interior hydration reservoir pocket, padded sleeve that accommodates up to 15-inch laptop, easy-access internal shovel storage pocket, and fleece-lined goggles/music pocket.