It’s extremely comfortable to wear! It is used adjustable strap for the perfect fit. Block out light. You can get a good night's sleep. Simple and Cute. It's a cool sister cat sleep mask. (color)Red / Navy Red:https://pinkoi.com/product/9miYw6zp [Contant] one sleep mask (Bag sold separately: https://pinkoi.com/product/yKsttKvS ) [Material] Surface: Cotton 100% Back: Cotton 100% Black Belt: Black Size-adjutable belt [Size] (wide x high) Child :16cm x 10cm / 6inch x 3.9inch Adult :18cm x 11.5cm / 7inch x 4.5inch [Thickness] /// What is the difference standard and thin? /// The wearing comfort. Standard type :fit your skin and comfortable perfect for all the year over. Thin type: light and comfortable perfect for spring-summer season.Breathable. [Care] It is washable. tumble dry, normal, low heat. [Gift Wrapping] No extra charge https://i.pinimg.com/564x/6f/37/2a/6f372a4ec6d0ab6c3a52ef953651840e.jpg [Shipping] International e-packet in Japan It's more reasonable than EMS,faster than SAL.And it is send by airmail. It's is registered mail,tracking service is available some countries. ーーーーーーーーーーーー 【Custom-made】 You can also select “Lining color”and”Belt color”at no extra charge. If you need to change the color ,tell me “lining color”and”belt color” . （Lining color）①white②beige③red④pink⑤light-blue⑥black （Belt）①black②brown③red https://i.pinimg.com/564x/10/50/76/105076aeb9cfcc4f05caaaa762dc7df3.jpg https://i.pinimg.com/564x/29/a4/2d/29a42d624020e755b61414345488429f.jpg If you have any questions,please ask me. I'm looking forward to your order from all over the world. Thank you.