Improve Endurance & Delay Ejaculation: By slowing the blood flow to the penis, it can make you bigger and longer and improve your sensitivity. It can also lock your foreskin, which makes your penis more beautiful. Medical Grade Silicone: This penis ring is made of body-safe silicone, which is ultra-soft and stretchable, They go on smooth and fit comfortably. 100% waterproof with no smell. Note:All the packages are private and no one knows what's inside! For your privacy, no product-related words will appear on the package, please rest assured to buy. Note: Due to different measuring tools, there may be an error of 1-3mm, please understand. If you have any questions or do not understand, please contact me in time, thank you!