T-Shirt Yarn for Crocheting: Made of polyester fiber, so shiny, soft, stretchy and hasn't faded, great for various crocheting and knitting projects. 36 Colors to Choose From: Uniform coloring, great color selection, beautifully textured crochet. If you've been wanting to try out a different fiber craft, this yarn will definitely do the trick! Specification: Weight: 285g (10oz), Length: 109 yards. Width: 2.2cm. For 5mm-7mm crochet hook.