Specification: Brand Name:None Model Number:one size Origin:CN(Origin) Feature: Reliable for a Long Time Use: this swim hat is made of stretchy and nylon material, reliable and not easy to deform, elastic and comfortable, it can add warmth and cover to your delicate head Size Details: our swim hat with chin strap adopts about 2.5 mm/ 0.1 inches thick fabric, thoughtful to fit the curve line of your head and face, providing you with nice wearing feelings, enjoy your happy diving time under the sea Functional Strap Design: this surf hood is designed with flat lock stitching for comfort, reduce drag in the water, keep you warm underwater; Chin strap design will keep your hat stable, you can also adjust tightness Ideal Helper for You: these swim hat keep your hairstyle neat when you're diving, snorkeling, swimming, kayaking on vacation, no worries of hair flowing or messy, save your time and energy Various Occasions to Wear: this wetsuit hood is suitable for swimming, diving, snorkeling, kayaking, fishing, surfing, sailing, canoeing, and more, swimming hat is not fully waterproof, you also need to match with your other diving gears Size Size-------------High---------Head circumference one size--------19cm/7.5"-----54-58cm/21.25"-22.83" Package Included: 1* hat Note: 1.Please allow 1-2cm size deviations due to manual measurement,measuring methods and tools. 2.The picture may not reflect the actual color of the item because of different photographing light and display monitor.Thanks for your understanding.