Errata: For ‘Squared Check’ version it has been noted that there is a problem with the numbers being right. The best I can figure is that as you increase out you’ll end up with 23 sts, and you need 22 for the pattern, you can increase out to the 23 (so your sides are even), then in the middle of the row before you begin the patterned section k2tog and you will have the correct number of sts. I will work on changing the website page to reflect this as well. Thank you all who brought this to my attention! I have no test knitters, so I depend on your input. Thanks!

This reusable wrap is an excellent replacement for disposable ‘java jackets’. In addition to being adjustable to work around your ceramic or glass mugs at home, this also fits around most to go cups found at your local coffee house. Tell your barista that you have your own ‘sleeve’ and save the world one less bit of trash and wasted card board.

You can knit this up in any yarn in any gauge, the gauge given provides a dense but flexible fabric and the yarn used was a bit of scrap from the bottom of my stash bucket. This pattern would be great in everything from the last bit of a hand spun to cheap kitchen cotton.
NOTE: If you do change the kind of yarn you use, please note that the width of your jacket will change. If you use a thicker yarn, do not increase as many times, or only increase twice every increase row instead of four times.