I didn’t realize it would come in a shrunk down package in a small box compared to the size of the mattress. I was a little leery that you had sent the wrong mattress but once we freed it from its restrictions, it blew up to 14 inches and it did have a coils inside which I had insisted on before placing the order. However, it was supposed to be medium firm but I am finding it very soft for my bad back and I have had a backache every night since we bought the mattress. In hindsight I should’ve gotten the firm. I wish I could’ve tried it out first but it’s a little late now,  my husband is happy with it!