The Calypso Crab Cotton Jar Huggers pattern was designed as part of the 2018 Mermaid CAL. The pattern includes both Quart and Pint sized patterns. The quart jar pattern features not only the Calypso Crab stitch, but also bobbles to represent small seashells. The pint hugger focuses mainly on the Calypso Crab stitch.
These were designed using 100% cotton worsted weight yarn. My favorite is Hobby Lobby's I Love this Cotton because of the color range available (75 colors including variegated) and the softness. These are great for using up scraps, and they work up quickly.
I have several of these jar huggers, and they are lovely for keeping the drink sweat from ruining my surfaces.