Chime 12 Inch Memory Foam Mattress

When it comes to your comfort, discover this 12-inch California king mattress. Its memory foam layer contours to your body, delivering amazing pressure relief to the body's major pressure points. This layer is supported by a thick layer of high-density support foam, which helps reduce motion transfer so you can enjoy an undisturbed night's sleep. This mattress arrives in a box for easy setup. Simply cut away the thick plastic wrap, unroll the mattress and watch it fully expand into place within minutes. Folding power base/box foundation available, sold separately.

Comfort level: ultra plush
Thick memory foam layer
Super thick firm support foam
Stretch knit cover
Note: Purchasing mattress and foundation from two different brands may void warranty; see warranty for details
10-year non-prorated warranty
Foundation/box spring sold separately
Mattress ships in a box; please allow 48 hours for your mattress to fully expand after opening
State recycling fee may apply

72.0" W x 83.5" D x 12.0" H

Weight: 89.0 lbs.

• Overall Size: 72.0" W x 83.5" D x 12.0" H
• Weight: 89.0 lbs.
• Expansion Time: Full expansion typically occurs within 48 hours.
• Shipping Format: Compressed and rolled in a box.

• Ultra Plush Comfort Level: Designed for sleepers who crave a cloud-like feel, providing a soft, luxurious surface that doesn't sacrifice support.
• Body-Contouring Memory Foam: The premium memory foam layer molds to your unique shape, delivering targeted pressure relief to major joints and pressure points.
• High-Density Support Core: A thick layer of firm support foam reinforces the mattress, ensuring longevity and maintaining proper spinal alignment.
• Motion Isolation Technology: The dual-layer foam construction absorbs movement, significantly reducing motion transfer for an undisturbed night's sleep.
• Breathable Stretch Knit Cover: Features a soft, high-quality stretch knit cover that enhances the plush feel while allowing for airflow.
• Convenient Bed-in-a-Box Setup: Arrives compressed in a compact box; simply unroll and watch it expand to its full height within minutes.
• Power Base Compatible: Versatile design works perfectly with traditional box springs or modern folding power bases (sold separately).
• 10-Year Peace of Mind: Includes a 10-year non-prorated warranty, ensuring your investment is protected for a decade of restful sleep.

Free shipping on all orders*

We offer Free Ground Shipping on all eligible orders*

*Certain zip codes excluded. Extended Area Delivery Surcharges may be added to the order at checkout. Please be aware, this delivery surcharge is not refundable once the order ships. Please note that all delivery dates are estimates and actual delivery times may vary or be subject to change.

All orders are processed within 1-3 business days. Orders are not shipped or delivered on weekends or holidays. Shipping charges for your order will be calculated and displayed at checkout. Delivery times vary based on the shipping option selected.

Please visit our Shipping page for detailed Mid In Mod shipping policy.

Return / Refund Policy

Shop with Confidence – 30-Day ReturnsWe think you’ll love your Mid in Mod picks, but if something isn’t quite right, our 30-day return window has you covered. Please see our Shipping & Returns guide for more details.

Manufacturers Warranty

Things don’t always go as planned. In the unlikely event your item arrives damaged, please get in touch with us right away. Please inspect items before signing for the delivery. Please refuse delivery if there is significant visual damage to the outer packaging. Our standard manufacturer’s warranty covers defects in materials and workmanship for one year from the products’ date of delivery.

Q: What kind of mattress is the Chime 12 Inch Memory Foam California King Mattress?
A: It is a memory foam mattress with a 12-inch profile designed to provide body-contouring comfort and supportive sleep for a spacious California King surface.

Q: How does memory foam affect the feel of this mattress?
A: Memory foam contours to your body, reducing pressure points and providing a hugging sensation that can help you feel more cradled and supported.

Q: Who might prefer a memory foam mattress like this?
A: It’s ideal for side and combination sleepers, as well as anyone who enjoys a softer, body-conforming feel that eases stress on joints.

Q: How does the California King size improve the sleep experience?
A: The California King size offers extra length and width, giving taller sleepers more room to stretch and more personal space for couples.

Q: Will this mattress help with motion transfer between partners?
A: Yes, memory foam is effective at minimizing motion transfer so that movements from one sleeper are less likely to disturb the other.

Q: How does this mattress support everyday sleep routines?
A: The memory foam layers help maintain even support and comfort night after night, making it suitable for regular use and restful sleep.

Q: What are common benefits of a 12-inch memory foam mattress?
A: A 12-inch profile typically offers balanced comfort — enough depth for contouring while still providing support and longevity.

Q: Why might someone choose a memory foam mattress over innerspring or hybrid options?
A: Memory foam tends to excel in pressure relief and motion isolation, making it a strong choice for people seeking a cushioned, supportive sleep surface.