Cascade Heritage Sock Yarn #5685 Dahlia Cascade Heritage Sock Yarn #5685 Dahlia. Heritage is a super-soft yet durable yarn that is machine washable and dryable because of its blend of superwash merino wool and nylon. Heritage has amazing stitch definition and with 437 yards and an array of colors, this yarn is great for one skein projects, such as socks, mitts and other fun accessories. 75% Superwash Merino Wool / 25% Nylon Yarn Size [1] Fingering. Knitting Needle Size: US 1 - 3 / 2.25 - 3.25 mm. Knitting Gauge: 28 - 32 sts = 4" (10 cm). Crochet Hook Size: C / 2.75 mm (D / 3.25 mm, E / 3.50 mm). Crochet Gauge: 25 sc = 4" (10 cm) (23 sc = 4" (10 cm), 22 sc = 4" (10 cm). Weight: 100 g / 3.5 oz. Approx: 437 yds / 399.6 m. Machine Wash Cold. Tumble Dry Cool.