With Sock Twins by Estelle you can knit a perfectly matching pair of socks.
Each kit contains two balls that slowly change colour, while knitting up exactly the same!
Contains 2 x 50g balls, each with 200 m (220 yds), for a total of 400 m (440 yds) per set.
75% Superwash Wool, 25% Nylon
Suggested needle: 2.5 mm (fingering weight)