Maximum sun protection and beautiful design is what we do best! The reversible patterned sun hats are lightweight super soft splash-proof and have adorable patterns on both sides. The chin straps fit snugly through the adjacent eyelet making the hats practical to wear on either side. UPF 50+ offers maximum sun protection for your child’s head ears and neck. 2-in-1 reversible sun hat design soft and lightweight reversible chin straps that feed through eyelets UPF 50+.X-small: 0-6 months small: 6 months -2 years medium: 2-4 years.