|BERNAT-Baby Stretch Yarn. This super stretchy yarn is perfect for baby! Knit or crochet blankets; wearables and even toys. Weight Category: 4; 48% Acrylic/44% Cotton/3% Nylon/2% Elastic; 173yds/157m; 2.8oz/80g. Gauge: Knit: 20s x 26r = 4in/10cm on US7/4.5mm needles; Crochet: 20st x 26r = 4in/10cm on H8/5mm hook. Care: Machine wash and dry; do not bleach; do not dry clean; do not iron. Imported.