Complete 9-Piece Set with 150 T-Pins – Includes 9 interlocking blocking mats and 150 rust-resistant T-pins, all stored in a convenient transparent zipper bag. A complete, ready-to-use kit for blocking crochet, knitting, lace, and needlepoint projects. Extra Thick 0.75 Inch Foam Construction – Each mat is 0.75 inches thick with high-density EVA foam, allowing T-pins to embed deeply while keeping your work securely taut. The extra thickness provides superior pin-holding power compared to standard blocking mats. Interlocking Design for Any Project Size – Mats feature puzzle-style interlocking edges that can be assembled into any shape up to 36"