Unique fiber blend: Off-The-Yak sports a unique blend of 25% yak, 50% wool, and 25% acrylic, creating a squishy soft fiber with crisp stitch definition, natural texture, and soft radiance. All-purpose weight: #4 medium worsted/aran weight with 11 WPI. Suggested needle size: US 7-9 (4.5–5.5mm). Suggested hook size: I-9 to K-10.5 (5.5–6.5mm). Ample yardage: Off-The-Yak is available in 3-skein and 7-skein packs at 120 yds per skein, for 360 yds/300g and 720 yds/600g, respectively. Natural texture: Off-The-Yak’s intriguing blend of yak, wool, and polyamide imbues knits with a natural texture, soft sheen, incredible bounce, and the slightest drape. Range of colors: a generous palette of more than 33 colors includes a wide spectrum of neutrals, muted pastels, and earthy primary colors. Easy care: Off-The-Yak is machine washable in cold water, but we suggest hand washing in cold water to prolong the life of your handmade item. Always lay flat to dry.