UNIVERSAL Bamboo Pop Sock is a wool-free, self-patterning sock yarn made for cheerful socks, baby knits, and lightweight accessories with built-in stretch. Acid Wash comes in a 100 g ball with 450 m (492 yd) of bamboo and cotton blended with PBT for springy stitches and comfortable fit. Machine wash warm and dry flat, avoid bleach and heat, and use fine-gauge tools to show off the colour shifts This helps finished pieces keep their shape and colour over time.