PelviFit Coloured Kegel Kit by Shots Toys Playboy Pleasure no learning curve Buckles require fully submersible Battery USB no learning curve Buckles require adjustment Steep learning curve for safe tying Quick release Built in safety loop for instant disengagement Requires unbuckling under pressure Requires careful untying Feature Entice Open Mouth Gag Standard Ball Gag Silicone Bit Gag Mouth position Forced wide open Held slightly open Held in natural open position Material Medical grade silicone Rubber or PVC Medical grade silicone Comfort for extended wear Padded trust{margin:18px 0 and start with the lightest weight to avoid muscle strain