Hello! I see nobody ever replied to this question- I am so curious about the red boxes as well!!!! I have looked for them for sale- seems like one should have one by the time they get their pup if they plan to show prep, I couldn't find them for sale. Granted- red box is kind of vague in a google search- but I thought it was strange they never showed up! Even of show specific websites or yorkie specific websites- I began to wonder if people built their own but even if they did there must be very specific measurements. I hope some clever person replies to this thread with all of the answers
