World Cage Security Shield One Size | 100% Silicone The innovative Security Shield with Pleasure Points adds to the security of the World Cage devices. Works using Shark Tooth Technology (Don't worry, it is not as scary as it sounds) to hold you in place. The Security Shield is the most advanced anti-pullout device on the market. Body-Safe. Made from 100% Silicone. The Security Shield is also compatible with many of the most popular brands of Plastic Male Chastity Belts. Warning: Do not use Silicone Lubricant while using the Security Shield.