The Helix midnight luxe king is an excellent choice for back sleepers and stomach sleepers who prefer a soft, medium feel. Its comfort layers and zoned coils combine to provide superior support and pressure relief, while a premium cooling cover keeps you cool at night. It also has a sturdy perimeter edge support, which helps prevent the mattress from sinking in at the edges.

The mattress’s foundation layer is made from high-density DuraDense foam, which provides the firmness needed for good support. This layer is complemented by the Helix’s signature plush quilted pillow top, which is soft and creates a cloudlike appearance and feel. It’s also designed to reduce motion transfer so you can get a better night’s sleep.

Next is a layer of Helix Responsive Foam, which is designed to create a soft and bouncy feel. It prevents you from sinking into the mattress too far, which is important for back sleepers. It’s also hypoallergenic, which means it’s safe for people with sensitive skin.

On top of this is the cover, which is made from a stretchy fabric that’s designed to be breathable and cool. It’s backed by Helix’s GlacioTex Elite cooling technology, which works with the mattress’s foam and coils to disperse heat and keep you from overheating during the night.

Helix offers a 100-night sleep trial and 15-year limited warranty with every Helix mattress, including the Midnight Luxe. The sleep trial lets you try the mattress at home and return it for a full refund if you don’t like it. The company requires that you give the mattress a 30-day break-in period before requesting a refund, which is a standard policy for online mattress retailers. The company also has a solid reputation for customer service, with most verified buyers giving the mattress a 5-star rating.

As with other bed-in-a-box mattresses, the Helix Midnight Luxe will arrive at your door rolled and vacuum packed. It will need a 24- to 72-hour off-gassing and decompression period once you open it, so it’s best to leave it in a well-ventilated room. The company doesn’t offer white glove delivery, but you can pay extra for LoadUp to have the mattress delivered and set up in your bedroom.

The Helix Midnight Luxe mattress isn’t a great option for heavier sleepers. If you’re a back or stomach sleeper who weighs more than 130 lbs, the Helix mattress could be too soft for you to get enough support. You should consider one of Helix’s more firm models if you’re a heavy sleeper. It’s also a good idea to look for a more firm model if you’re a side sleeper who weighs over 200 lbs. This will help ensure you get proper spine alignment while you sleep, which can help reduce pain and soreness in your hips, knees, and shoulders. If you’re a lighter side sleeper, Helix might work for you, but you should test it out in person to see how it feels.