Keep your phone clean and dry.
[exterior] non-slip, soft-touch rubber [seal] silicon
yes, IP68 rating
In the world of waterproof phone cases, you'll be hard-pressed to find one that doesn't turn your phone into the size of an old Motorola brick. Fortunately, Catalyst cases are laudably slim given their level of protection. They keep things sealed up while maintaining full usability of controls, switches, buttons, and ports – although not every cable is going to fit.