Home Prefer light weight portable kids sun hat is perfect for any outdoor activities: fishing, hiking, camping, hunting, gardening, cycling, boating etc. . Moisture wicking sweatband for keeping your kids cool and dry. Adjustable chin strap and back toggle for custom fit, breathable mesh provides good ventilation. UPF 50+ for ultimate sun protection, blocks 98%+ of damaging UVA/UVB sun rays. Please measure with the head girth before purchasing. Size M: 50-52cm for Ages 2-4 Years Old, Size L: 52-54cm for Ages 4-8 Years Old