This insulator cup sleeve is made of quality neoprene material, which can keeps hot drink warm longer, even can keeps your beverages cool longer.Lightweight,foldable,reusable,easy clean,the attaching strap is good elasticity and makes it easy to carry around, Multi styles for your choice, exquisite printing gives them a chic and charming look, you can choose them to match various colored glasses and cups.Large capacity approx. 7.25 x2.75 inch, suitable for most 30 oz cups, mugs, water bottles etc,perfect to keep in car, office shop, meeting room, home, restaurant, hotel, also can be exquisite gifts to families, friends, classmates etc.