The Nectar Sleep Mattress is a top contender for the best bed in a box king mattress. This mattress is designed with a medium-firm feel, making it suitable for a variety of sleepers. It also features a five-layer construction, including a cooling gel memory foam layer to help regulate temperature and provide pressure relief. Additionally, the Nectar Sleep Mattress comes with a 365-night trial and a lifetime warranty, making it a risk-free investment for a good night's sleep.1. Nectar Sleep Mattress
The Casper Original Mattress is a popular choice for those in search of a comfortable and supportive bed in a box. This mattress is made with a combination of foam and springs, providing a balance of comfort and support. It also features a zoned support system, which provides targeted support for different areas of the body. The Casper Original Mattress also comes with a 100-night trial and a 10-year limited warranty.2. Casper Original Mattress
The Tuft & Needle Original Mattress is a high-quality bed in a box option that offers a comfortable and supportive sleep experience. This mattress is made with adaptive foam that contours to the body and provides pressure relief. It also features a breathable cover and graphite and ceramic gel-infused foam to help regulate temperature. The Tuft & Needle Original Mattress comes with a 100-night trial and a 10-year limited warranty.3. Tuft & Needle Original Mattress
The Purple Mattress is a unique bed in a box option that features a patented grid technology for maximum support and pressure relief. This mattress is designed to distribute weight evenly, providing a weightless feel for a comfortable sleep. The Purple Mattress also has a breathable cover and a cooling gel layer for temperature regulation. It comes with a 100-night trial and a 10-year limited warranty.4. Purple Mattress
The Leesa Hybrid Mattress is a luxurious bed in a box option that combines foam and pocket springs for a supportive and comfortable sleep experience. It features a layer of memory foam for pressure relief and a layer of pocket springs for added support. The Leesa Hybrid Mattress also has a breathable cover and comes with a 100-night trial and a 10-year limited warranty.5. Leesa Hybrid Mattress
The Helix Midnight Luxe Mattress is a customizable bed in a box option that is designed to meet the specific needs and preferences of each sleeper. It features a hybrid construction with foam and pocket springs for a balance of comfort and support. The Helix Midnight Luxe Mattress also has a breathable cover and comes with a 100-night trial and a 15-year limited warranty.6. Helix Midnight Luxe Mattress
The Saatva Classic Mattress is a luxurious bed in a box option that is handcrafted with high-quality materials for a comfortable and supportive sleep experience. It features a coil-on-coil construction with individually wrapped coils for contouring support and edge-to-edge comfort. The Saatva Classic Mattress also has a Euro pillow top and comes with a 180-night trial and a 15-year warranty.7. Saatva Classic Mattress
The Layla Memory Foam Mattress is a dual-sided bed in a box option that allows sleepers to choose between a firm or plush feel for their desired comfort level. It features copper-infused memory foam for cooling and pressure relief, as well as a breathable cover. The Layla Memory Foam Mattress comes with a 120-night trial and a lifetime warranty.8. Layla Memory Foam Mattress
The Avocado Green Mattress is a natural and eco-friendly bed in a box option that is made with organic materials for a healthy and comfortable sleep environment. It features a combination of latex and pocket springs for a supportive and responsive feel. The Avocado Green Mattress also has a soft wool and organic cotton cover and comes with a 365-night trial and a 25-year limited warranty.9. Avocado Green Mattress
The DreamCloud Luxury Hybrid Mattress is a top-of-the-line bed in a box option that is designed to provide a luxurious sleep experience. It features a combination of memory foam, latex, and pocket springs for optimal comfort and support. The DreamCloud Luxury Hybrid Mattress also has a cashmere blend cover and comes with a 365-night trial and a lifetime warranty.10. DreamCloud Luxury Hybrid Mattress