Proozy offers the Nike Swimmer's Backpack in Volt or Laser Crimson for $32.99. Coupon code "SWIM34" cuts the price to $17. With free shipping, that's $16 under last week's mention and the lowest price we could find by $18. It features a 32 liter capacity, detachable mesh bags, water-resistant fabric, and adjustable straps. Deal ends October 31.