This is designed to turn a mug into a pencil holder. I purchased it to use for a vehicle work space. Doesn't fit on travel cup. It's sewn not Velcro. I don't know why you would need this. Just put pencils in a mug. So there's your info.
Gave these at Christmas to my hubby's friends. Stuffed all of the pockets with pencils, pens, beef jerky, and candy. The inside was perfect for a gift card. They really liked them.