With Estelle Sock Twins Mouline, you can knit a perfectly matching pair of socks. With 4 plies that change colour over time, these gradients are even smoother and come in a wider variety of colours! Just like our prior Sock Twins, these come in a kit which contains two balls that slowly change colour, while knitting up exactly the same - 2 x 50g balls, each with 200m, for a total of 400m per set. 75% Superwash Wool, 25% Nylon