Absolutely the best  on the market. They’re not too tight and not too loose. 100% made in the USA. Details from the manufacturers website below.

The BlackStrap Daily-Tube Multifunctional UV Sun Mask is made in the USA and will be quickly become your favorite multi-functional tool against the elements. With dozens of wearing applications for any outdoor adventure, this lightweight, highly breathable, facemask features 4-way stretch fabric that is milled in the USA, keeps you protected from the blistering sun, dries quickly when damp and provides a barrier for cutting cold winds and has UPF 50+ UV sun protection.