Different IP grade and the applications for addressable LED strips
Non-waterproof : Bare Strip, with self-adhesive backing, for indoor or dry location use.
Waterproof IP65 : Strip Surface is covered on top with Gel, and with self-adhesive backing. IP65 grade can protect sprayed water from all direction.
Waterproof IP67: The bare strip is put in a hollow silicone tube and sealed at two ends. IP67 grade can shortly immersed in water.
Waterproof IP68: The bare strip is put in a U Shape silicone tube, then covered on top with silicon gel, and sealed at two ends, which make it’s solid.IP68 grade can be used under water.