UltraProof via Amazon offers the Tethys Universal Waterproof Smartphone Pouch for $6.99. Coupon code "52PCUBQJ" drops the price to $2.25. Plus, Prime members receive free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it adds $6.01.) That's $18 off list, a buck under our mention from August, and within pennies of the lowest total price we've seen. It fits phones up to 5.3" and is waterproof up to 13 feet.