Some say, "You're never fully dressed without a smile." We prefer to say, "You're never fully dressed without a sun hat." It's the perfect sun protection for baby's face and head, whether bald, with peach fuzz, or long locks. 100% recycled polyester UPF 50+ protection Chin strap with breakaway buckle closure Fabric: 100% recycled polyester with UPF 50+ protection. Feel: Lightweight, crisp, and extra durable. Fit: Hat fits the largest size within each range. Please refer to our size chart to verify best fit.