Serious about your knitting and crochet? These extra thick blocking mats are total game-changers! At 0.75 inches thick, these interlocking foam squares are sturdy enough to handle any project without buckling or shifting. The dual-color grid lines make measuring super easy - no more squinting and counting tiny squares! Each 12.6x12.6 inch mat connects securely to create whatever size surface you need for blankets, scarves, sweaters, or even intricate lace work. The water and heat resistant material means you can safely steam block or wet block without worrying about color transfer or damage. This complete set includes everything you need: 9 blocking mats, 100 T-pins for securing your work, a handy pin blocker, and a storage bag to keep everything organized. Perfect for knitters, crocheters, and needlepoint artists who want professional-looking results. The dense foam provides just the right amount of cushion while holding pins securely in place. Whether you're a beginner learning the basics or a seasoned pro working on complex patterns, these mats will give you crisp edges and perfect dimensions every time. Say goodbye to wobbly blankets and uneven sweaters - hello to projects that look like they came from a high-end boutique! Your finished pieces will have that polished, professional look that makes all the difference.