If you're wondering how long it takes for the Sealy Hybrid Bed in a Box 12 Inch Queen mattress to fully expand, it's generally around 24 to 48 hours. After you unbox it, you'll see it start to puff up right away, but it usually gets to its best shape and comfort level after a day or two. This time lets the memory foam and innerspring coils settle properly.
According to the manufacturer's product description, waiting these hours is important to enjoy the mattress's full support and comfort. This wait is quite normal for memory foam and hybrid mattresses, as they need some time to completely decompress after being packed tightly for shipping.
You can sleep on it during this expansion time, but for the best experience, it's a good idea to give it the full 48 hours. The CopperChill technology, which helps keep the mattress cool, also benefits from full expansion and will work better to provide a cooler surface, especially useful if you tend to sleep hot.
Our research shows that people have noticed while the mattress is comfy before it's fully expanded, the CopperChill feature really shines after those 48 hours. People who sleep hot particularly appreciate this because it helps reduce the mattress's heat retention.
So, when you're setting up your new mattress, just be a little patient.
Giving it that extra time to expand fully will help ensure you get the complete benefits of your Sealy Hybrid Bed in a Box mattress, contributing to a cooler and more comfortable night's sleep.
How we researched this
Where this comes from: This answer is based on ShopSavvy's product database, real-time pricing from 2 retailers, and a look at hundreds of user reviews to give you a well-rounded picture.
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