Extra Thick Blocking Mats for Knitting - Pack of 9 White Blocking Boards with Grids for Needlepoint or Crochet - Includes Measuring Tape & 150 T Pins

Product is great, love the thickness and guide lines. Only issue was the smell when opening that lasted a couple of weeks. Sprayed it with a weak solution of vinegar and water to help remove the smell before I used them.

I ordered two sets. Yes, they have a chemical type smell that I would imagine many things of this material have. I opened them, placed them outside to air out and the smell quickly dissipated.They pieces fit snugly and the grid line matched up. I didn't measure to see how precise they are, but they are straight, which is what I needed.The second set easily interlocks with the first, the grid lines matched. The boards can be placed in varying configurations to meet your requirements. They are sturdy and thick.Am very satisfied with purchase and would recommend.

I ordered 3 sets of the foam blocking mats. Although there was an odor when I unpacked the blocks, after leaving them in my sunroom for a few days, the odor was not a problem. They fit together nicely and each set of mats came with a cloth tape measure and a pack of T-Pins. I am very happy with this product.

For the price the product would have been OK, but the chemical smell gave me an asthma attack. Airing out the product did not help. I am sad that I have to send the product back because of the smell. The material that the blocking boards/mats are constructed of have a odd texture. They are not plesant to touch. I don't think after multiple uses the matts would hold up.

These arrived with a really horrible odor to them. I almost sent them right back. However, after putting them outside in the sun for several days, bringing them in at night to avoid dew, they are almost odor free. There's no way I could have aired them out in the house. I think I will love using them to block my knitted items once the smell is completely gone. So hang in there and put them outside if you can.