Amazon.com: Loops & Threads Impeccable Yarn 4.5 oz Skylight Medium (4) Weight
Yarn Ball of U.S. Organic Cotton Sport Weight-4 oz/250 yds/228m – Appalachian Baby Design
What is Worsted Weight Yarn? | AllFreeKnitting.com
Amazon.com: Cotton to The Core Medium #4 Worsted Weight Super Soft Baby Cotton Yarn for Knitting Crocheting Blankets, Chainette, 3 Skeins, 654yds/300g (Fresh Peach)
All About Yarn Weights for Knitting
Caron ONE POUND Yarn 100% Acrylic Worsted Weight 4 ply color Lace 585 | eBay
Amazon.com: Woolen Delights Heavy Worsted/Aran Weight #4 Yarn for Knitting and Crocheting, Australian Wool Blend, Pack of 6, 1044yds/600g (Pumpkin Orange)
Amazon.com: Wool Wonders Medium Heavy Worsted/Aran Weight #4 Super Soft Variegated Yarn for Knitting and Crochet, 30% Australian Wool and 70% Acrylic, 4 Skeins, 400g/640yds (Caramel Sapphire)
Amazon.com: Off-The-Yak Heavy Worsted/Aran Weight #4, Knitting and Crocheting Wool Yarn, 25% Yak, 50% Wool, 25% Acrylic, 3 Skeins per Pack, 360yds/300g (Seafoam Green)
Yarn Weight Chart & Guide to Yarn Sizes/Types | Jo to the World Creations