These boot and straw covers are great! I have three sets. They protect my Stanley from scuffs and keep my beverage protected from anything that may go down the straw. I wish they came in more colors to compliment the many Stanley covers. Thanks for such a novel creation and addition to my cups!
The silicone is of very good quality, especially the cup base cover. If the tube caps were designed with cute and diverse cartoon characters, it would be very interesting.