TheMouth Ball Breathable Gag Red is soft and doesn't hurt your teeth. Also, it has elastic ends that don't cut the corners of your mouth. This one has a silicone ball and that nice soft silicone material extends on both sides so there's no chafing and it doesn't cause cuts. The belt holes adjust more than enough for head size or tightness preference. Ideal for those who simply want to tie their partner's hands and feet, it's long enough and durable enough for those who want to engage in rope bondage