Scrub'd Up elastic back scrub caps have an adjuster toggle at the back to get the perfect fit you need. The medium has 2 back pleats and fits up to 62cm head circumference. Suitable for short to medium hairThe large has 4 back pleats ands fits up to 72cm head circumference, perfect for thick or long hair) *18 colours* . * Hot wash up to 60 degrees .* Polycotton 65/35* Can be tumble dried.