Double Helix Quick Release Erection Enhancer is a trim-to-fit cock ring. Quick release double erection enhancer. Safe and pure for body and pleasure. Made using phthalate free, non-toxic materials Rubber. Large ring measures 2.75 inches in diameter. Small ring measures 2.25 inches in diameter. Bulk weight 0.4 ounce. Category: For Men, Rings & Sleeves, Rings. Pursuant to 18 U.S.C. 2257, Double Helix was produced on December 12, 1997, and the records required to be kept by that law are available at 14235 Ramona Avenue, Chino, California 91710. Custodian of Records: Susan Colvin. Double Helix is a registered trademark for California Exotic Novelties. Sex toys and sexual wellness. New high resolution images added. Made in the USA.