SIZE CHART: S: head circumference 48-52cm; M: head circumference 52-56cm; L: head circumference 56-60cm; XL: head circumference 60-64cm; XXL: head circumference 64-68cm. PERFECT for FACE SLIMMING: Effectively tightens up the face and neck skin, improve facial wrinkles to the maximum extent. Quickly fix the face contours, making your cheek and chin thin, reducing double chin, improving skin relaxation, enhance skin elasticity, make the face to smaller, smoother and add more solid facial lines. Shaping the perfect V line chin. Perfect for Face Slimming SKIN-FRIENDLY: Made of Made of Lycra fabric, which is soft and good elasticity. With a hook & Loop, adjustable from your own. Physical therapy, no side effect, safe to use EASY & SAFE TO USE: Adopt a simple physical way to improve your face shape, mild for kinds of skin, will not cause allergic reactions, no side effect, safe to use. Adjustable Hook & Loop design, adjustable from your own, fits for most people REUSABLE & DURABLE: This compression chin strap can be washed with warm water, just use a mild detergent, then dry naturally. Easy to use, just wear for 30 minutes when reading, sleeping, watching TV or doing housework. It can keep your chin up, reduce the thick chin and reshapes the facial contours GREAT CHOICE: This face facial lifting slimming belt is great as a gift to your female friend. it will be the best gift for the beauty of the women. Kindly reminder: Choose our this face slimmer strap, using the safest physical way face-lift to improve a double chin, prevent the cheeks sagging, insist on using more than three months is more effective