Bedhead Swim Legionnaire hats are so soft and comfortable over the ears and back of the neck making them a perfect baby swim hat. Our swim hats are made of high quality chlorine resistant stretch nylon knit with quick drying ability. Swim hats are best for use in a wet environment - at the beach, lake, swimming pool or splashing about under the hose! A cotton rich hat will be much cooler for everyday use. Chlorine resistant fabric – pool friendly Rated UPF50+ Excellent Protection Tested in accordance with Australia & New Zealand Standards 4399 Sun-Smart recommended brim depths (see tab below for measurements) Made from 100% PBT Nylon stretch knit Wash & Wear - gentle cold machine wash and line dry in the shade 'Return to' label to help hats get home safely Stretch chin strap with adjustable toggle Hat Size Brim Depth 37cm / XXS / 0-3 months 5.5cm 42cm / XS / 3-6 months 6cm 47cm / S / 6-12 months 6.5cm 50cm / M / 1-2 years6.8cm 52cm / L / 2-3 years 7cm 54cm / XL / 3-6 years 7.2cm