It is used adjustable strap for the perfect fit. Block out light. You can get a good night's sleep. Hand embroidery using white thread. It's very soft and smooth cotton used baby underwear. https://i.pinimg.com/564x/0f/fe/28/0ffe289b1deeefeba17110f3859f9635.jpg [Contant] one sleep mask (Bag sold separately: https://pinkoi.com/product/yKsttKvS ) [Material] Spring(pink) Surface:Linen 100% Back: Cotton 100% White Belt: Red When you can't decide which one to choose. I recommend [ Adult / standard]type. [Size] (wide x high) Child:16cm x 7cm Adult :20cm x 9.5cm https://i.pinimg.com/564x/1a/28/39/1a283956d5a9c85deafd4fa9a1f1c98a.jpg [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. https://i.pinimg.com/564x/bf/ae/84/bfae84dc2d4f84cce449c8a4862749fd.jpg [Care] It is washable. tumble dry, low heat. [Gift Wrapping] https://i.pinimg.com/564x/6f/37/2a/6f372a4ec6d0ab6c3a52ef953651840e.jpg 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.