This is the best insulated versatile cup out there! I purchased the to-go buddy because I love my iced coffees from Dunks and Starbucks or even McDonald's and this cup fits all 3 sizes of iced coffee cups from different places and it fits perfect and keeps your ice from melting for up to 12 hours! I have gotten a large iced coffee at 8am and by 8am the next morning there's still a hunk of ice in the cup because the liquid was long gone but the ice stayed for 24hours!!! And you have the silicone ring for the top of the cup so the smalls and mediums fit snug and then you take it off for the large cups and they all fit perfectly! Also I got the purple gradient color and it is amazing I love it!!!