Experience extraordinary sleep at the intersection of luxury and innovation with the Beautyrest Black Collection's premier materials and advanced sleep features.
Triple-Stranded Pocketed Coil Technology offers our highest level of individualized support and motion separation, so you can rest undisturbed.
Specialized vertical fibers combine with an applied surface-cooling technology to help transfer heat away from the body all night.
Contouring foam adheres to the shape of your body for exceptional pressure relief.
High-density, firm-feel comfort foam provides a unique combination of comfort and support night after night.
A unique, channeled design promotes airflow for cool, enhanced pressure relief.
All foams are CertiPUR-US certified.
Our mattresses are proudly assembled in the USA.
Adjustable base compatible.
SKU: 50037057
10 year limited warranty
Customer Reviews
Beautyrest Black Series One Extra Firm Twin Xl Mattress
4.5 out of 5 stars
Based on 347 ratings
5
70%
4
20%
3
5%
2
1%
1
4%
Damian N
Mattress
Comfortable and convenient. Ideal for people with back problems.
Review provided by Beautyrest
Reviewed On Jan 24, 2026
Pawnee R
Thanks !!!!
Super firm, I love it.
Review provided by Beautyrest
Reviewed On Jan 23, 2026
Mark G
Br series 1 firm
Nice bed good price
Review provided by Beautyrest
Reviewed On Jan 16, 2026
Pei Z
Feels good
Extra firm is comfort
Review provided by Beautyrest
Reviewed On Jan 16, 2026
Urbano S
Excellent split king mattress
Very firm and cool
Review provided by Beautyrest
Reviewed On Jan 6, 2026
Beautyrest Black Series One Extra Firm Twin XL Mattress | Rooms to Go