MATERIAL - Made of environmentally friendly, odorless and non-toxic EVA foamHEAVY DUTY & EXTRA THICK FOAM BOARDS - These 9 packs of knitting boards are perfect solution to block your knit or crochet shawls or baby blanket ect. It will be shaped and stayed firmly in place. Our knit blocking mats feature a 0.65 thick dense foam that allows pin holes to heal every time.PERFECT ADDITION-In addition to 9 packs of knitting boards, you will also get a super-quality dark gray felt cloth bag with a handle design that is easy to carry and easy to store. A pack of 100 T-shaped needles is included to help you get started, and a cork stopper is provided to collect the needles.FITS ANY SIZE PROJECT - Whether to use individual board (12x12) for smaller knitting or crochet projects or piece them together for larger projects, T-pins for blocking is a good choice for you. It is a perfect aligned grid that allows you to precisely complete any needlepoint or crochet project without any doubt in your mindLOVE THEM OR YOUR MONEY BACK - Were confident that you will love blocking pad to help your hobby works. However, if for whatever reason youre not satisfied, we got you covered Our products are backed by 12-month warranty; you can return it to us for a refund or a replacement if theres a problem