Material and safety: The sleeve is made of silicone, hypoallergenic, smooth, soft, flexible, nontoxic and odourless. Watersoluble lubricant can be used. Design and benefits: Breathable design allows comfortable wear throughout the day to help correct overgrown foreskin, aid training and reduce glans sensitivity. Performance: elastic penile rings suitable for prolonging ejaculation and improving erections during normal sex. Convenience and care: Small and easy to store. It can be washed with water when not in use. Easy to use and suitable for use in any sexual situation. Use scenarios: During partnered sex to prolong duration and support erection quality. For daytime wear to assist foreskin correction and training while helping reduce glans sensitivity. While traveling or on the go, thanks to compact size and simple washing; compatible with waterbased lubricant for quick setup.