This River Blue solid colored "Sister Sidekick" mini skein has been dyed on our Big Sky Base (75% superwash merino wool and 25% nylon).
Some people, including us, don't want to interrupt the striping sequence on the instep of a pair of socks knit with our self-striping yarn -- OCD, anyone? One mini skein should be enough yarn for heels (and perhaps toes) for one pair of adult socks. If you wish to also use a solid color mini skein for the cuffs, you should purchase one more mini skein. Review the description for the self-striping colorways to see what color(s) mini skein coordinates with each colorway.
All of our yarn is dyed by hand, which may result in slight variations. We use professional acid dyes. Although this yarn has been rinsed thoroughly, colors may bleed during initial washing.