Feature: 1. Interlocking Blocking Board: These interlocking blocking mats with grid lines allow for quick, easy, and accurate knitting projects. Individual block can be served for smaller projects, while four blocks together cater to larger projects 2. Clear Grid Lines: These knitting blocking mats feature clear grid line design, single side printing, achieving seamless placement is effortless, making these blocking mats essential for knitting, sewing, and any other crafting projects 3. Convenient to Use: Designed with numbering, these knitting blocking mats can be quickly assembled to the desired size, offering ease of use for both beginners and experienced craftsmen. They are simple to set up and take down 4. Foam Material: Crafted from 1.9cm thick foam, these mats are lightweight yet lasting. They provide well rebound and support, effectively holding knitting yarn in place to prevent deformation and ensure a smoother knitting process 5. Easy to Maintain: These foam blocking boards are easy to maintain, simply wipe the mat with a damp cloth to remove dust and dirt. Additionally, they can maintain dryness and cleanliness for a long time, extending their service life Specification: Item Type: Knitting Blocking Mats Product Material: Foam Mat Size: Approx. 32 x 32 x 1.9cm / 12.6 x 12.6 x 0.7in. Package List: 4 x Knitting Blocking Mats