Mug sleeve / Cup sleeve

When we drink coffee, we use the sleeves of coffee cup in order not to burn our hands. Even if we use the sleeves for the coffee cup, the cup is still hot. Therefore, we cover the cup with two sleeves or put the cup into another cup. In addition, the common sleeve used to slip from our hand because it doesn’t have a handle and the design to avoid slipping.
The Mug sleeve is a newly designed coffee cup sleeve adding dotted lines on previous coffee cup sleeve, providing various methods for consumers enjoy drink. Users can use it either as previous sleeve or put their fingers into cup handles like a mug cup