1. The size & shape of "pint" glass these fit vary in size. Unless you buy the glasses sold by FR, you won't know if the sleeves fit yours until you get them. Even then...2. Size is not consistent: Of the 2 I bought, 1 fits too tight, the other, too loose--on the same glass. 3. Unlke FR's excellent can coolies, these sleeves are not insulated: the single layer of waxed canvas provides very minimal protection.