Super speedy delivery, in less than 24 hours and the sizing guide is quite precise. Refer the sizing guide as it'll accurately help you. In terms of the actual product, i.e. the shoe, it seems and feels genuine and the product is as described and listed on Flipkart.
if you are buying it to wear 4+ hrs, dont buy it, its not comfortable. there is pain in due to harder sole due to long duaration wearnig. consider accordingly.