I ordered the sport buddy and the frost buddy. Would give both five stars but the frost buddy was a bit larger (circumference) and my arthritis kept me from holding it securely. It definitely is a five star from my daughter. She loves how it keeps her drinks cold, prevents the ice from melting and accommodates drink glasses from all her favorite restaurants… Starbucks, McDonalds, Jack in the Box… everything! I use my sport bottle every day- it’s a winner! We will probably order more! The only true negative I have is the packaging… both bottles arrived in their own lightweight cardboard boxes, but they were packed together in a small lightweight shipping envelope. They were squished in there! And the flimsy envelope didn’t protect the boxes from being smashed in transit. So I unpacked a very badly damaged envelope, certain the bottles would be damaged. Surprisingly, they were not damaged. That’s a testament to their durability, for sure. But from a customer standpoint, it isn’t a very comforting thing to have such a badly damaged parcel arrive… it doesn’t look like the company cares about the product (or my business?) enough to pack everything well and leave a great impression when it arrives! First impressions count!!