Apollo 7 Function Premium Enhancer XL Cock Ring Smoke. Durable and stretchy erection enhancer. Dual semi-circle stainless steel supports for comfort and stamina. Safe and pure for body and pleasure made using phthalate free materials Thermoplastic Rubber. TPR enhancer, Stainless Steel supports. Bulk Weight: 0.8 ounce. 2.25 inches by .5 inch. Category: For Men, Rings & Sleeves, Rings.