It allows the yarn to pass through the hole to prevent tangling.Satisfy your collection of crochet, sewing needles and thread.Suitable for storing yarn, knitting needles, handicrafts.Great for home or work knitting.Kit for knitting enthusiasts, crochet beginners or experienced knitters.Name: yarn storage bagMaterial: PEnotes:1. Please allow 1-3cm difference due to manual measurement.2. Due to the computer screen, the real color may be slightly different from the picture, please understand, thank you.Only the main product is sold, no other decorations are sold.List:1* yarn storage bagNote:1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!2. Please allow 1-3mm measuring deviation due to manual measurement.