Slumber 1 By Zinus 12" Support Innerspring Mattress (Queen) $94, (King) $154 + Free Shipping

Should ask if this is Zinus old stock or new. Their old stock uses fiberglass as flame retardant layer while the new ones moved away from it. Based on the price and the fact that it doesn't advertise "fiberglass free," I'm gonna guess this is old stock. Make sure you buy a mattress encasement outer layer, and do not ever attempt to open the mattress cover.

Also, I'm not a fan of bonnell springs, although at this price level, individually wrapped pocketed springs are pretty much impossible to find.

Can you explain your why? I'm pretty much clueless to what you're talking about.

Sure. A couple of years ago, a few families filed lawsuit against Zinus because they unzipped Zinus mattress to clean but exposed fiberglass in the process. They are tiny and can be barely seen by the naked eye. Direct contact causes skin irritation and if inhaled, causes respiratory problems. And because they are so small, they fly everywhere and can contaminate everything in a room, including clothing. Fiberglass remediation/removal can cost tens of thousands of dollars.

Fiberglass is used as a flame retardant because it melts rather than burns, and so many mattress companies use them, particularly those on the lower price points. While it generally isn't a problem when fully encased in a tightly woven mattress cover, they are so small that strands can stick out, particularly where there are seams on a mattress.

Zinus recently switched away from fiberglass because consumers are looking for fiberglass free mattresses. So I'm sure that it is clearing out their old stock at super low prices.

Regarding bonnell springs, they are usually in cheap mattresses because they are easy to produce and cheap to use in a mattress. In contrast, the manufacturing process for individually wrapped springs are more complicated and costly. Their tradeoff is that because bonnell springs are all interconnected, there's a lot of motion transfer. That means when one person moves on one side of the bed, the entire movement can be felt by another person on the other side of the bed. On the other hand, individually wrapped coils only transfer motion based on the top layer, since the springs aren't directly connected. As you can imagine, individually wrapped coils are better for larger beds designed to be shared while bonnell springs are a better value for smaller beds.

Hope that helps.

Sure. A couple of years ago, a few families filed lawsuit against Zinus because they unzipped Zinus mattress to clean but exposed fiberglass in the process. They are tiny and can be barely seen by the naked eye. Direct contact causes skin irritation and if inhaled, causes respiratory problems. And because they are so small, they fly everywhere and can contaminate everything in a room, including clothing. Fiberglass remediation/removal can cost tens of thousands of dollars.

Fiberglass is used as a flame retardant because it melts rather than burns, and so many mattress companies use them, particularly those on the lower price points. While it generally isn't a problem when fully encased in a tightly woven mattress cover, they are so small that strands can stick out, particularly where there are seams on a mattress.

Zinus recently switched away from fiberglass because consumers are looking for fiberglass free mattresses. So I'm sure that it is clearing out their old stock at super low prices.

Regarding bonnell springs, they are usually in cheap mattresses because they are easy to produce and cheap to use in a mattress. In contrast, the manufacturing process for individually wrapped springs are more complicated and costly. Their tradeoff is that because bonnell springs are all interconnected, there's a lot of motion transfer. That means when one person moves on one side of the bed, the entire movement can be felt by another person on the other side of the bed. On the other hand, individually wrapped coils only transfer motion based on the top layer, since the springs aren't directly connected. As you can imagine, individually wrapped coils are better for larger beds designed to be shared while bonnell springs are a better value for smaller beds.

Hope that helps.

Where can I go for unbiased reviews of mattresses? How would this mattress compare to a brand-name one?