You are buying a complete set of patterns which will be emailed to you as a pdf. The options are numerous. You can make regular gloves, Mittens, fingerless gloves with attached mittens and the list goes on. You can also change sizes easily.
Pattern includes 2 styles. Each style is made in short or long lengths and includes increases for larger arms than average.
Then there is Fingerless gloves with finger seperations which you can add no finger length or 1/2 lengths. You can add a capped mitten that allows you to use your fingers and then flip the cap to keep them warm. You can add 1/2 thumb, full thumb Mix it up.
Also are instructions for full fingers to make regular gloves and then there is instructions for regular mittens too.
Sizes are adjusted by changing hook. Get XS, S, M, L, LX. Lets not start there you can also use finer yarn since the pattern uses a 4 ply to get children sizes. Or use bulkier yarn and make them for men. Direction explains size changes