UPF 50+ certified breathable sun fabric (mesh not rated) 5.75-9.5 cm down sloping brim with floatable foam core (brim length depends on size) Full 11.5-15 cm neck veil for protecting back of neck (veil length depends on size) Strategic mesh ventilation Water repellent / stain resistant Packs flat for travel Smartstrap breakaway chinstrap technology External sizing band for custom fit Lightweight: 51g Small/Baby fits 6-24 months 49cm – 54cm Medium/Child fits 2-5 years 51cm – 56cm Large/Youth fits 5-12 years 53cm – 58cm