Erection Type and Normal Type has the same shape. Their difference is just the size difference. Their materials are made of the finest silicon. In addition, the silicon surface is frictional. It does not peel off easily or flow down. It is very suitable for everyday life. **TIP** 1. If your penis is thick, you can use the erection type as a normal type. 2. The product can also be used as a general penis ring. 3. Adult males typically repeat 10 or more erection contractions per day. The size of the penis is different every day. It is recommended to use alternating to fit the size of the penis. Using this TWIN Ring will cure phimosis on men, has the same purpose with foreskin removal surgery. Long time usage will clean the glans, avoid smegma from causing balanitis and other disease, at the same time, this product can reduce the sensitivity of the glans skin, increase the erotic in love. 100% New Brand Material : Silicone Size(Inner Diameter) - 28mm (1.10 Inch) 24mm (0.94 Inch) Thickness : 8mm Type and Color : Erection Type (Black and Gold), Normal Type (Black and Red ) Made in Korea Products instruction: 1. Clean your hands 2. Pull back the foreskin,fully exposed glans. 3. Clean the glans and coronal,Wash with soap,make sure it's clean. 4. Be sure to dry penis perfectly. If the skin is moist, it may be difficult to wear the ring 5. Open the package of TWIN Phimosis coreection ring. Through sanitation process,can be use directly. 6. wear on coronal position. Wear it with the colored side up and down. (This is to avoid pressing the urethra.) 7. Ensure the foreskin is not causght. Fully at backsside of ring. Below persons are not suitable to use this product: 1. Genuine phimosis patients. 2. Paraphimosis phimosis patients. 3. Foreskin adhesions patients. 4. Glans skin damage,Inflammation. 5. Dysuria 6. Before puberty