From $79.95. Sleek and slim while meeting military specifications. Some models also leave the screen free while still keeping the phone waterproof. See lifeproof.com.
$39.99. A polycarbonate shell pairs with resilient silicone covering the controls and home button. It provides shock, drop and vibration protection. See griffintechnology.com.
$89.95. Australian brand, Dog & Bone's Wetsuit series was the world's first "topless waterproof design". It provides direct access to the touchscreen while being waterproof and has a double layer of protection. See dogandbonecases.com.