F-color via Amazon offers its F-color Universal Waterproof Case 3-Pack
in Black/White/Light Blue, model no. 5441096, for $14.99. Coupon code "CGQIKAON" drops it to $11.99
. Plus, Prime members bag free shipping
. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.33.) That's $18 off, $4 per case, and the lowest total price we could find. Each case fits smartphones up to 5.5" and is IPX8-certified waterproof up to 65.6 feet.