【Material】The infant boys sun hat is made of polyester,lining is polyester,which is breathable and sweat-absorbent,keeping baby's head cool in hot weather.Soft fabric of the baby summer hat is more caring for the baby's skin. 【Size】5 sizes for your choose,44cm/17.3” fits for 0-3 Months,46cm/18.1" fits 3-6 Months,48cm/18.9" fits 6-12 Months,50cm/19.7" fits 12-24 Months,52cm/20.5" fits 2-4 Years.The age is only for reference, you can choose sizing according to your baby's head girth. 【Cute Design】Wide brim baby boy hat is the perfect accessory for your little one.Comfortable, extra breathable lining and shark pattern design, perfect for all day wear.The adjustable chin strap is easy to slide up and down,ensuring that the toddler sun hat does not fall in strong winds. 【Sun Protection】This toddler bucket hats for boys is wide enough to provide your child with excellent sun protection,protecting the child's head,eyes,face and neck from harmful sun UV rays,which means more time for outdoor activities. 【Occasions】The baby beach hat is light weight and easy to fold to fit into a pocket.Easy storage, travel friendly.Our kids sun hat is the best choice for kids playing at the beach or in the backyard, go to travelling,camping,and other outdoor activities. Baby summer hat 0-3 Months/3-6 months/6-12 months/1-2 years/2-4 years/4-8 Years