Sports Tennis Shoe Attachable Drink Coaster - Blue Allow your guests to distinguish their glass in style with these unique and fun attachable coasters for the foot of their glass! Slip a coaster onto the foot of the glass. It will travel with you, at the pool side, in the sand at the beach, and of course at your festive party table Show your team spirit and display your team colors with this fun drink coaster Made of high quality cotton canvas. Each coaster is approximately 4 1/2" long x 3 1/2" wide Designed to fit most stemware.