I spent all afternoon creating a frame for this kozie only to discover it was too big to fit the kozie. Thanks to Kim for helping me get the frame right & I will use it on another project. Hubs really enjoys flavoured water but doesn't like (nor do I) the condensation on the bottle so I decided to make him his own kozie to fit. What a challenge to figure out what this fabric actually is. I have no idea. I looked up neoprene & it is very costly so I went to the dollar store & bought a zipped bag for tablets & cut it into the shape of the bottle I added the green to the top & sides because I didn't want it to be a plain black & his favorite is the kiwi strawberry so the green matches the bottle too. After all is said & done I like it & he better like it too! lol