UNIVERSAL Bamboo Pop Sock Solids is a wool-free yarn made for smooth socks, baby knits, and lightweight accessories. In solid shade Sky, each 100 g ball delivers about 450 m (492 yd) of super-fine yarn spun from bamboo and cotton with a touch of elastic PBT for spring and stitch definition. It works well for detailed stitch patterns and holds its shape through everyday wear and laundering with easy-care handling.