Mr. Pen Blocking Mats for Knitting & Crochet, 9-Pack 12" x 12" Tiles with 1" Grid and 150 T-Pins

Mr. Pen 9-piece 12" x 12" interlocking blocking mats are a durable, heat- and water-resistant surface for accurately shaping knitting, crochet and fiber crafts while they dry.

If you make garments, shawls, blankets, amigurumi or other yarn projects, a reliable blocking surface speeds finishing and helps items hold their intended measurements and stitch definition. This set includes nine 12" x 12" high-density foam tiles with a 1" grid for precise alignment, plus 150 T-pins to secure pieces while they dry. The tiles lock together to create a customizable workspace that adapts to small samples or full-size projects.

How do these mats make blocking easier and more accurate?

The printed 1" alignment grid on each tile gives visible reference lines so you can pin straight edges, match stitch counts, and measure repeats without a tape measure. The uniform square shape and consistent thickness keep projects flat while pins hold tension evenly across the piece.

• 1" grid printed on every 12" x 12" tile for quick measuring
• Interlocking edges ensure seams lie flat and patterns align
• 150 T-pins supplied to secure corners, curves and lace

Will these mats stand up to steam blocking and repeated use?

Yes — the tiles are made from high-density foam engineered to resist heat and to shed water, so they tolerate steam or wet blocking sessions without warping. The surface is resilient so the grid stays readable and the interlocks maintain a snug fit after many uses.

• Heat-resistant foam suitable for gentle steam blocking from a safe distance
• Water-resistant material that dries quickly and resists staining
• Durable construction holds shape after repeated mounting and pinning

Can I change the working area to match different project sizes?

The modular design lets you snap together only the number of tiles you need, or assemble the full nine to create a 3x3 surface. Remove or add tiles to form long rectangles, wide squares, or a compact board for small pieces — flexibility that adapts to scarves, sweaters, doilies, and swatches.

• Interlocks join quickly to form custom configurations
• Individual 12" x 12" tiles are easy to store or transport
• Expandable layout supports both small and large projects

What comes in the box and how will it help my finishing process?

The package contains nine 12" x 12" grid-marked tiles and 150 T-pins, giving you enough surface and fasteners to block most garments or multiple smaller items at once. The included pins are made for foam surfaces and hold fabrics securely without piercing or stretching delicate fibers.

• Nine 12" x 12" tiles with 1" printed grid for layout and measurement
• 150 T-pins sized for blocking thicker and lace-weight projects
• Tiles interlock for secure joins and simple rearrangement

Who is this for: Crafters who want a reliable, reusable blocking system — from hobby knitters and crocheters to small-batch fiber designers. If you finish handknits, need consistent measurements, or want a tidy, transportable surface for steaming and drying, this Mr. Pen set offers a practical, long-lasting solution that adapts to different project needs.