Smooth as blinkin' silk, this. It's beautiful! Used as a fine 4ply or light fingering weight yarn. Made using cruelty free silk, this yarn uses only bourette silk, where the silk worms are allowed to pupate into moths before flying away, leaving their cocoons behind. This silk is made using the left-behind cocoons. Excellent for knitting patterns such as the Ellie Summer Top by Rust Knitwear.