Sanctuary from sun and chill alike. The hardworking Kids' Rash Guard has a stretchy blend of quickdrying 5.8oz 84 polyester16 spandex fabric blend with builtin 30 UPF sun Safe guardion. Its seamless underarm gussets let them move naturally and without binding for swimming, boarding or castle building. A low profile, mock turtleneck design provides neck coverage; flat seam construction throughout keeps the action frictionfree.