The Diamond Dreamstage 2.0 Collection Tranquility Medium Titanium Memory Foam Euro Top Mattress is a medium innerspring mattress built for combination sleepers and most body types. Diamond Mattress is family-owned and California-built — every model is hand-assembled in Chino with CertiPUR-US foams and OEKO-TEX natural fibers. At 16", it sits in the premium profile range — generous enough for adjustable bases yet still easy to sheet.
Hand-assembled in California with domestic steel coils and CertiPUR-US foams.
A foam-encased perimeter lets you use the full sleep surface — and sit on the edge to dress.
Each coil moves on its own, so a partner getting up doesn't roll you out of position.
A tall comfort and support stack means more contour up top and stronger lumbar push-back below.
A 5/10 firmness — soft enough to relieve pressure on shoulders and hips, firm enough to keep your spine in line. Most-recommended firmness for combination sleepers.
Built for adaptive support and breathability. Every layer is hand-checked before it ships from our warehouse.
Diamond Mattress is a 4th-generation family-owned company that has been handcrafting mattresses in Southern California since 1946. Founded by the Pennington family in Compton, California (now headquartered in Rancho Dominguez), Diamond is one of the few mattress manufacturers in America that is fully vertically integrated. They make their own pocketed coils, process their own memory foams, and cut and sew their own fabrics — all under one roof. This level of control over every component means Diamond can maintain strict quality standards that outsourced manufacturers cannot match. Every Diamond mattress is CertiPUR-US certified, GREENGUARD Gold certified for low chemical emissions, OEKO-TEX tested for harmful substances, and ECO INSTITUT certified for environmental safety. Diamond also uses REPREVE recycled fibers in select products, demonstrating their commitment to sustainable manufacturing practices.
The Diamond Dreamstage 2.0 Collection Tranquility Medium Titanium Memory Foam Euro Top 16" Mattress combines titanium memory foam with a traditional innerspring support system. Titanium-infused memory foam provides enhanced thermal conductivity compared to standard memory foam or gel-infused alternatives. The titanium particles move heat away from the body, providing the body-contouring pressure relief of memory foam without the heat retention that many foam sleepers experience. The 16" innerspring coil system provides the responsive, bouncy foundation that distinguishes innerspring mattresses from all-foam designs. The coils allow continuous airflow through the mattress core, further enhancing the cooling performance. The euro top comfort layer is sewn flush with the mattress edges, creating a clean, finished appearance while adding cushioning above the firm innerspring foundation. Diamond manufactures their own coils in their California factory, controlling the gauge, count, and zoning for optimal support.
The medium comfort level is the most versatile option, designed for combination sleepers who shift between back, side, and stomach positions during the night. It provides enough cushioning for comfortable side sleeping without being so soft that back and stomach sleepers lose spinal alignment. Medium is typically the safest starting point for sleepers who are unsure which firmness they prefer, and it is the most common choice for couples who have different firmness preferences.
As an authorized Diamond dealer, LA Mattress Store carries the complete Diamond lineup in all five of our Los Angeles showrooms — Glendale, West LA, Hancock Park, Koreatown, and Studio City. Walk in any time during business hours to try this mattress in person. Our sleep consultants can help you compare firmness levels, construction types, and find the right mattress for your sleep style and budget. Every purchase includes free White Glove delivery anywhere in the Los Angeles metro area — our team delivers to your room of choice, sets up the new mattress, and removes your old one at no extra cost. Same-day delivery is often available. Diamond offers a 120-night comfort exchange (exchange for a different model if needed) and a 20-year manufacturer warranty — one of the longest in the industry. LA Mattress Store coordinates all warranty claims on your behalf. We also offer 0% APR financing for qualified buyers, making it easy to invest in better sleep without paying the full amount upfront.
Diamond Dreamstage 2.0 Collection Tranquility Medium Titanium Memory Foam Euro Top 16" Mattress is available in Twin, Twin XL, Full, Queen, King, CA King. Queen starts at $1,799. All sizes include free White Glove delivery in Los Angeles.
Have questions? Call us at (800) 218-3578 or visit any of our 5 Los Angeles showrooms to try it in person.
