Hombre Xtra Stretch Silicone C-Bands 3 Pack Charcoal Premium Fittings For Men. These Xtra Stretch liquid Silicone C-Bands by Hombre give you the versatility of stretchy Thermoplastic Rubber TPR cock rings but are made of 100% premium silicone. The added stretch makes putting one on and taking it off a breeze, making them perfect for beginners and cock ring aficionados alike. Xtra Stretch body safe silicone. 3 sizes for the perfect fit. For penis, testicles or both. Sizes 1.5 inches, 1.75 inches, 2.0 inches. Phthalate free. Dimensions width Small Ring 1.8 inches. Medium Ring: 2.2 inches. Large Ring: 2.25 inches. Height Small Ring 1.8 inches. Medium Ring 2.2 inches, Large Ring 2.25 inches.