Package Include: You will receive 12 packs of knitting blocking mats, each crochet blocking set equipped with 150 stainless steel T-pins and a storage bag; When your handicrafts are completed, store your crochet blocking board and T-shaped nails in this reusable bag for easy carrying and storage Thick and Durable Material: The crochet blocking mats are made of EVA material. These knitting blocking mats have a high density and are with a thickness of 0.4 inches, thus being able to firmly fix your needles. Deeply embedded in the foam, your crochet, lace or needle embroidery works will remain taut and can be reused for many years Precise Layout