12/5 (Poly/Cotton) thread provides slightly more feet per lb. with a little less strength - normally used in the bag making process (32 per case).
Aunt Lydia's Crochet Cotton. This high luster mercerized cotton crochet thread is perfect for crochet projects both large and small. This thread is available in a wide range of fashion solids neutral basics and alluring multi-colors that are ideal for home decorating and fashion projects. Size 7/1.5mm crochet hook is recommended. Care: machine wash warm, gentle cycle. Dry flat. Do not bleach, do not dry clean. OK to iron. Imported.
Aunt Lydia's Fashion Crochet Thread Size 3 White
Spun Polyester Thread, T-40
Crochet Amigurumi with Chunky Yarn (how different from DK yarn
Yarn Weight Chart and Guide - Sarah Maker
100% Cotton Sewing Thread - 12,000 Yards
Aurifil 12 wt Thread - Buy Aurifil Cotton 12 Weight Thread Online
Comparing Hand Embroidery Thread Weights: 12wt, #8, #5, #3
Poly Cotton Warp
How to Choose the Right Thread or Yarn for Your Mending Project
Polyester Bag Macrame Yarn, 4-5 Mm, Polyester Yarn, Crochet Bag
Solid Bright White, Cotton Twill Fabric, 8oz., 100% Cotton