Irregular smocks/lab coats are sold as 36 pieces in a carton. You will receive any type of smock/lab coat that we sell. While every effort is made to fill orders with an assortment of sizes and styles, sometimes the inventory supply is of one type and one size. You could receive a carton with all of one style and one size or primarily of one style and size. If an assortment is mandatory, please send an email to firstname.lastname@example.org. Most likely, your request will be honored. Second quality garments are defined as being off shade, the measurements are outside of our specifications, there are fabric defects, or anything else deemed as second quality. PLEASE PLACE YOUR QUANTITY ORDER BASED ON THE NUMBER OF BOXES-not pieces. All sales are final-no returns or exchanges.