Pull the top down and hold the ribbed rings with two fingers, then pull the loops up. Guide the erect penis through the loops and pull the sleeve tight enough that there is no pain. If you feel too much pressure or if the penis swells blue, simply pull the ribbed rings with the loop up to the left and right. Then place the testicle loop over the testicle and pull the lower cuff upward with feeling. Note: Gently pull on the ends so as not to pinch the skin or hair. RUBBER CORD Rubber round cord made of NBR – elastomer (nitrile), Ø 5 mm, hardness: 70 Shore. A-quality, high strength and elasticity. ALU-SLEEVE The elegant sleeve is made of hard aluminum and has been treated with an anodized color. WARNING: Do not use for more than 30 minutes. Wait at least 60 minutes between uses. Don't fall asleep with the cock ring. Read the printed product information / application and warnings (CAUTION!) in the packaging. CLEANING: Use a disinfectant Toy Cleaner for toys and body for cleaning.