I really love Kores company chalks and this shop was the one from where I bought them years ago as they are non-toxic unlike nowadays' chalk companies. I was so glad to get them as in my childhood that was the chalk we used to take back home from school and really love it, now too because of its PURITY. P.s. Please note that FREE DELIVERY is applicable only on order above Rs. 500 order, if it's less than that then Rs. 40 will be charged for the same.