These rash vests are made from 80% Nylon and 20% Spandex with flat lock stitching. They offer a good fit with plenty of stretch.
4/6 years : Chest 25" / 63cm, Length from base of collar 16.5" / 42cm
6/8 years : Chest 27" / 69cm, Length from base of collar 17" / 43cm
8/10 years : Chest 28" / 71cm, Length from base of collar 17.5" / 44.5cm
10/12 years : Chest 29" / 73.5cm, Length from base of collar 19" / 48.5cm
Measurements have been taken with the material unstretched.