Love these! They are simply the best it actually is the only product that fits every can and bottle without having to remove an insert. There’s just ONE size (16oz can) that you can’t use without removing it. Either way, you can use it with all of your cans and bottles! It’s a solid product and it keeps your drinks cold for HOURSS. I think the wide variety of options sold me too. Lots of choices to choose from. I also purchased two and a day later I made another purchase for another. They emailed me personally to verify that I did this and it wasn’t a fluke. They had my drink/can coolers to me quick! It was FAST shipping. I also love this business more now that I know who they actually are. Made in USA, family owned small town. I love that. I always get compliments and questions on them. That second purchase was for a client of my husbands!