I’ve never bought a mattress from Costco and quite frankly I tend to overly debate purchases and my mental capacity is pretty drained right now. So, which would you buy, for a three year old?

So my husband and I need to get a new mattress and are thinking about Costco for it. We bought a brand new mattress at a random mattress store back in 2017 right after we got married. In less then 7 months it had formed huge divots from my husbands pressure points down the bed. You couldn’t find anywhere to lie comfortably. We tried taking it back to the random mattress retailer after 7 months and they said “nope, so sad. Would you like to buy a NEW one?” So our supposedly first big purchase after getting married turned into a huge waste of $2k bucks.

Since then we have literally bought second hand mattresses when needed at a fraction of the cost. Things were great with that until my dear mother came to visit. You’d think she slept in an Iron Maiden. She then tears the sheets off and saw it had a goodwill tag (the horror). I can’t describe the mix of anger, bewilderment, disgust, et al that came from that woman’s mouth. (I hurried and grabbed the sheets before she saw they were from IKEA just in case that was an issue!)

That brings me to my question for everyone. Anyone acquire a mattress from our store and savior, Costco? I’d like to get some different opinions but let’s be real. The ONLY thing I care about is the return policy. The 2017 divot debacle cannot happen again! Id like to know that if anything happens all I have to do is take it back like that 2009 sofa set, those too small pants and anything from Amylu (sorry guys. Just ew) Thanks for listening! And sorry for any grammatical boo-boos, I’m on mobile

Edit: I really want to thank everyone who commented on their experiences. I have a great idea on what we are going to pick. I’ll update the he post in the future once we decide!!

I'm looking for recommendations for 5" mattress (preferably foam) that will be mostly comfortable for adults (weights from 150 - 200 lb) who prefer medium firm to firm mattress. We recently bought the Utaker Stackable Twin from Ikea for our guest room with the idea that they will eventually transition to kid beds for our 4 year old and new baby due in September. I'd like to get a couple of decent mattresses for family who will be coming to help out with the new baby next month.

Any recommendations?

UPDATE

We bought the Bear Trundle Mattress. They're a little bit tight, but totally safe and usable. My 180 lb 73 year old father slept on it and said it was very comfortable. Both my spouse and I have taken naps on them and found them to be comfortable. They were firm, but comfortable for stomach/back sleepers.