Many people ask “how should I store my mattress as far as side or flat?” Storing your mattress in a breathable plastic bag will protect it from the elements. Here at Dino’s Storage we sell a wide range of breathable mattress bags and totes. Avoid storing your mattress in a thick plastic cover, as this will encourage condensation. Breathable plastic is enough to protect it from mold, dust and allergens while keeping it moisture-free. Mattresses are not meant to sit in storage for years, even with proper protection. In addition throw in a few laundry softener sheets for a nice scent. The retail stores have them on the sides so I don’t see a problem storing the same way as long as the mattress is a well constructed one. You can always come to you storage area and rotate the mattress also.