Casper Onyx 2.0 Queen Mattress With Head Up Only Base
SKU: 5890068P
4.5 million happy sleepers and counting.
4 out of 5 sleepers recommend Casper to a family member.
88% of customers report improved sleep quality.
100+ product tests, 25 prototyping & testing machines and 1 ergonomist to ensure the best sleep humanly possible.
Casper tirelessly tests every foam and thread to ensure the best balance of comfort, support and cooling.
Every material that Casper uses must help sleep and must be tested. No fads, just thoughtful design crafted by sleep experts.
The Casper Onyx mattress is designed with 3 layers of foam for comfort, breathability and support. Obsessively engineered by Casper's award-winning research and development team, this mattress contains Breathe Flex Foam for support and pressure relief & Breathe Foam for air flow that pairs breathability with softness for all-night comfort. Key features include a cozy knit cover designed with added stretch so you can experience all the comfort your mattress has to offer. Features a top layer of Breathe Flex Foam that's both responsive and breathable to soothe you to sleep with the perfect bit of bounce. A firm Casper Core base provides long-lasting support while preventing sinking and sagging. Foams are certified by the CertiPUR-US program, meaning they are made without ozone depleting chemicals and regulated by the Consumer Product Safety Commission Low VOC (Volatile Organic Compound) emissions for indoor air quality (less than 0.5 parts per million). Conveniently raise or lower the head of your mattress using the RTG Sleep 2900 adjustable base with wireless remote control.
Features
Adjustable / Foam / Mattress In A Box
Collection
Casper Onyx 2.0
Q&A answers generated with AI assistance.
Can using an adjustable mattress help with common sleep issues like snoring or acid reflux?
Based on our expertise with adjustable bedding, elevating the head can be highly effective for reducing snoring and managing symptoms of acid reflux. By using the wireless remote to raise the head of this mattress, you can use gravity to help keep airways open and prevent stomach acid from rising, leading to a more restful and uninterrupted night's sleep.
Is this mattress set a good choice for shoppers concerned about indoor air quality?
Yes, this mattress is a reliable choice for health-conscious households. The foams are CertiPUR-US certified, meaning they are manufactured without ozone-depleting chemicals and are regulated by the Consumer Product Safety Commission. Additionally, the mattress has been tested for low VOC (Volatile Organic Compound) emissions—measuring less than 0.5 parts per million—to ensure better indoor air quality for your bedroom.
Is this adjustable mattress set suitable for a master bedroom in a smaller urban home or apartment?
Absolutely. This queen-sized mattress features standard dimensions (80"L x 60"W), while the RTG Sleep 2900 base has a low-profile 4-inch height. This compact base design, paired with the 10.5-inch mattress height, provides a modern, streamlined look that doesn't overwhelm smaller rooms. Since the base fits within most standard bed frames or can stand alone on its legs, it offers great versatility for urban living spaces where maximizing square footage is essential.
What are the benefits of a "head-up only" adjustable base?
This mattress set includes the RTG Sleep 2900 adjustable base, which allows you to raise the head of the bed using a wireless remote. This feature is ideal for those who enjoy reading, working on a laptop, or watching television in bed, as it provides ergonomic support without the need for extra pillows. By elevating the torso, you can find a more comfortable upright position that reduces neck strain compared to a traditional flat foundation.
How does the mattress technology help with temperature regulation?
The mattress is engineered for optimal airflow to ensure you stay comfortable throughout the night. It features two specialized layers: Breathe Foam for consistent air circulation and Breathe Flex Foam, which provides responsive support while allowing heat to dissipate. This combination pairs breathability with softness, making it an excellent choice for sleepers who want to avoid the heat retention often associated with traditional foam materials.
How does the construction of this mattress prevent it from sagging over time?
This mattress is designed for long-term durability using a firm Casper Core base. This foundational layer provides the structural integrity needed to support the upper comfort layers while specifically preventing the sinking and sagging that can occur with lesser-quality foam beds. The addition of a "waterfall edge" border style also helps maintain the mattress's shape and aesthetic over years of use.
80"l x 60"w x 10.50"h; adjustable base: 4"h
