This is a brilliant idea for adjustable, easy to store blocking mats for those who crochet.
You get 9 interlocking pieces that you can assemble in different shapes. Putting all of them together in 3 rows of 3 would make a 3 foot square. You can buy additional sets to handle large projects like blankets and afghans. Because these are white you shouldn’t see color transfer from the mat to your yarn.
Nearly every yarn project has to be “blocked” – soaked and laid out to form – in order to hold its shape better over time. Finding the space to block a large project is difficult. My husband made me a folding wood board that I can put in the closet but these mats are even easier to use.