Berlin Cycling Hat Cap details:

The fabric we use is 100% polyester, which has the characteristics of absorbing sweat, wicking perspiration, anti-ultraviolet,
Reduce resistance ,breathable, light, easy to clean, and non-balling
Our hat design uses elastic rubber bands. The rubber bands are very elastic, so they have no size and are suitable for everyone. So you dont have to worry about the size, you can buy with confidence