【Updated 2in1 Double Side Blocking Mats】：We updated the knitting blocking mats, one side is grid lines,the other side is radial circles with grid lines, they can meets your different needs. 【Eco-Friendly & Extra Thick & Dirty-Resistant Grey】: Yrangee blocking mats for knitting & crochet projects are made of environmentally EVA material, which is non-toxic and odor free. The blocking mats are high-density and extra thick (0.75''), so they can effectively hold your pins firmly in place. These keep your crochet, lace, or needlepoint work taut and reused for many years. 【Waterproof & Steam Compatible】: These blocking mats for crochet prevent mois