Simply the best kids sun hat we have found. It is UPF50+, most importantly it keeps the sun off your child's face and neck allowing them to play in safely in the sun. This versatile Ultra Adventure hat offers UPF 50+ sun rating, crown ventilation, and a comfortable wicking sweatband. Made from a bluesign® certified main body fabric with an environmentally friendly PFA-free durable water repellent finish, its foldable brim helps it pack up small. Reflective panels also keeps kids visible in low light. Free delivery on all our sun hats!  Sizing Small/Baby fits 1 - 3 years (47cm - 50cm)Medium/Child fits 3 - 6 years (50cm - 53cm)Large/Youth fits 6 - 12 years (53cm - 56cm) See last image for how to measure (widest part of head: around forehead and above ears). Sizing is adjustable for perfect size even as your child grows. Features UPF 50+ sun rating (includes mesh) 3¼" brim and 5½" neck cape Reflective details Wicking sweatband PFA-free durable water repellent finish Adjustable sizing Smartstrap® Breakaway Chinstrap Technology on Child & Youth Sizes for child safety Foldable brim packs small and flat bluesign® certified main body fabric Packing: Brim folds for compact packing Weight: 2.2 oz / 62.5 g Care and Content Fabric content:Solids: 88% Nylon, 12% Polyester / Mesh: 100% PolyesterWashing and care instructions:Hand wash cold, do not bleach, line dry, do not iron, do not dry clean.Packing Instructions:Packs flat for travel. Do not fold or crease brim.