I made these can cozies several years ago and I’ll try to tell you how to make them.
You start with Worsted Weight yarn and a size H/8 crochet hook. Chain 6 and join in 1st chain to make a loop. Chain 3 then double crochet 7 times and join at the top of the chain 3 (8 dc). Next round.. chain 3 double crochet in same space. 2 double crochet in each of the next 7 spaces (16 dc). Join at the top of the chain 3. Next round… chain 3 double crochet in same space. 2 double crochet in each of the next 15 spaces (32 dc). Join at the top of the chain 3. The circle should now be the same size as the bottom of a soda can.
It’s a little dirty, it’s needs washing, but this is how the bottom circle should look.
Next round, working in back loops only, chain 3 and double crochet in each space (32 dc). Join at the top of the chain 3. Do the same for the next 6 rounds. You can either finsh it off and leave it plan or you can get a bit fancy and chain 5 skip 3 dc single crochet all around then fasten off. Weave in the loose end.
And here is the finished product that I use every day. It keeps my hand from getting cold in the winter and wet in the summer.
I hope you enjoyed this crochet project as much as I enjoyed making them.