The sun is powerful but now you can fight back against it's rays with the Jack Wolfskin Supplex Mesh Hat. This sun hat is made of soft light SUPPLEX fabric so it's really pleasant to wear in hot weather. Adjustable chin strap for windy conditions. Outstanding UV 40+ protection meets AS/NZ 4399:1996 standard. Round full brim. Mesh lining is breathable airy and moisture-wicking to keep you cool and fresh all day long. Shell: 100% polyamide. Lining: 100% polyester. Imported. Measurements: Circumference: 22 in Brim: 3 in Product measurements were taken using size MD. Please note that measurements may vary by size.