This is a truly cool idea, and they really insulte well. The material has a foamy, rubbery feeling, and stretches just enough to squeeze in many different can and bottle sizes. The material also feels good when holding it and had a bit of a grippy feel. The base part fits glasses, and fits perfectly on a rocks glass. The extended part can be adjusted for bottles, or hold a standard can on its own. It can also be inserted into the base part for extra insulation. Bottles fit well, and the adjustable top insert fits most any size. The colors are great, nice and colorful but in a subtle way. You can tell a lot of thought went into designing them. The pieces slide together but have small catches built-in to keep them together when extending. I did find that tall, skinny cans do not stay snugged in. They certainly fit but just wobble a bit.
I had a slight order delay, and the company responded and got things moving. It was refreshing to get a response directly from the people behind the products.