During cooler months, please let the sheet come to room temp before handling to prevent any cracking. At room temp, the sheet will be flexible. FYI: The dates listed on the site for delivery when you purchase an item are estimated by USPS during normal situations. I can’t give you a guarantee of a delivery time slot. Not even on a regular year. I do my best to give same day, if not next day service to get orders out my door quickly. I have 2-3 mail runs in a day. Therefore, I provide a service and then the post office takes over after that. Also join my FB page and watch for your birthday shout out! https://www.facebook.com/DJsSweetConfections