Fingerless mitts are almost as easy to make as cowls — you just need to take more measurements. Notice that after crocheting the bottom of the mitt, you break the yarn and work in rows for a specified length. This is the opening for the thumb, after which you work in rounds again to the top edge.
The fields F, G, and H are optional. You need to fill these in only if you are working a stitch pattern with known row/round and stitch repeats per unit of measurement.
Fields marked with * are required.