MATERIAL : Synthetic WATERPROOF : No Waterproof WEATHER CONDITIONS : GOOD WEATHER Quantity : 1 U Size : * Is my cap anti-UV? : Although the main fabric offers good protection against UV rays with a UPF greater than 50 (only allowing one fiftieth of the sun's rays to penetrate), under current regulations this cap cannot be regarded as anti-UV as it does not cover the back of the neck and because the vents are made from openwork fabric which does not block out UV rays. How do you measure a fabric's quick drying capacity? : The product is machine washed 3 times then line dried, then we immerse it in water and measure how long it takes to get back to its pre-wash weight. This cap scored an impressive 5 out of 5 stars, returning to its pre-washed weight less than 80 minutes! Additional resistance thanks to the crosshatch fabric : The crosshatched fabric is a mesh-type fabric. The warp and weft design helps ensure durability and prevent potential tears and stop tears. It is therefore particularly durable compared to a smooth canvas, for example.