Almost all thigh high socks lose their elasticity due to washing and drying.
High temperature washing and drying will quickly make thigh high socks lose their elasticity. There are spandex or rubber bands on the top of the thigh high socks, which are the main elastic part of the socks. High temperature is the natural enemy of these elastic materials, these materials will quickly lose their elasticity when they encounter high temperatures. The top band is especially important for thigh high socks, so don't put these socks in hot water or dry them.
If possible, do not machine wash these thigh high socks. The thigh high socks are very long, and they are easily entangled in clothes. Exceeding the limit can easily tear the thigh high socks or damage the elastic part of the thigh high socks. Washing these socks gently by hand will help them regain their elasticity after washing.
Kayhoma thigh high socks have very good elasticity, they can still maintain excellent elasticity after multiple washings. They can even be machine washed and can resist the erosion of laundry detergent. However, you should still avoid using a dryer.