The Sublimation Socks eBook includes three different gauges (6 st./in. by 8 rows/in., 7 st./in. by 10 rows/in., and 8 st./in. by 12 rows/in.) of one sock pattern, each in three different sizes (small, medium, large). That's three gauges of the pattern for less than the price of two! You should purchase this eBook if you plan to make sublimation socks in multiple gauges. Otherwise, swatch and choose the pattern that most closely matches your row gauge. BASIC SKILLS NECESSARY knit, purl, make 1, Judy's Magic Cast On, Jeny's Surprisingly Stretchy Bind Off, short rows. Tutorials for listed techniques are linked in the pattern. GAUGE 6 st./in. and 8 rows/in. -or- 7 st./in. and 10 rows/in. -or- 8 st./in. and 12 rows/in. The row gauge is important in this pattern; the stitch gauge, not so much. SIZING / FINISHED MEASUREMENTS Size S: foot circumference 7.5", foot length 8.5", total length (toe to cuff) 13"-14" depending on gauge. Size M: foot circumference 8", foot length 9.25", total length (toe to cuff) 15"-16" depending on gauge. Size L: foot circumference 9", foot length 10.5", total length (toe to cuff) 16".