This item was given to me, and it has a slight smoky smell. The cut is fine, but please refrain from purchasing if you are concerned. Please refer to the green mat below for the size; each grid is 1cm. If you purchase this item with other items I have for sale, I will discount the overlapping shipping costs. Please let me know via comments or a combined purchase request if you would like to do so. When requesting a combined purchase, please submit the request at the original price. I will calculate the shipping costs later and adjust the price accordingly.