Serta 10.5 Cal King Mattress Perfect Sleeper Midsummer Nights Firm Innerspring Mattress Cal King Size Mattress Adult Mattress
Overview
The Serta Perfect Sleeper Midsummer Nights 10.5" Cal King is a firm innerspring mattress built for sleepers who need structured support with targeted pressure relief. It pairs an 825-coil zoned support system with a Cool Twist® Gel Memory Foam layer and a lumbar gel support band to provide firmer hip and lower-back reinforcement while still contouring where needed. At 10.5 inches thick, it’s a lower-profile option that works well on platform beds or box springs and suits taller couples or individuals who want the extra length of a California King. Choose this mattress if you want reliable spinal alignment and a cooler-feeling memory foam contour without a plush, sink-in surface.
Key Features
- Dimensions: California King — approximately 72" wide x 84" long; 10.5 inches total thickness.
- Support core: 825-coil zoned innerspring system designed to deliver firmer support in the lumbar/hip region and slightly softer support under shoulders.
- Comfort layer: Cool Twist® Gel Memory Foam — gel swirled into memory foam to provide body-contouring relief while promoting airflow and improved heat dissipation.
- Lumbar gel support band: targeted gel reinforcement across the lower-back area to reduce mid-spine sag and maintain alignment.
- Firmness and profile: Firm feel suitable for back and stomach sleepers; lower-profile 10.5" construction fits many bed frames and works well on box springs or platform foundations.
Pros & Cons
Pros
- Zoned 825-coil system provides targeted support for hips and shoulders to improve spinal alignment.
- Cool Twist® Gel Memory Foam offers contouring pressure relief with gel swirls to enhance airflow and reduce heat retention.
- Lumbar gel support band adds reinforced support to the lower back area for better posture and reduced back pain.
- Firm feel works well for back and stomach sleepers and sleepers who prefer a supportive, stable surface.
- California King sizing (approx. 72" x 84") gives extra length for taller sleepers and couples who want more personal space.
Cons
- 10.5" thickness is thinner than many hybrid or pillow-top mattresses, limiting deep contour for side sleepers who need cushioning.
- Firm profile may be uncomfortable for strict side sleepers or those who prefer a plush, hugging feel.
- Innerspring construction can transmit more motion than all-foam models, which may bother very light-sleeping partners.
- Cal King bedding and accessories can be harder to source and sometimes more expensive than standard King sizes.
Recommendations
- Back and stomach sleepers who need a firmer surface to maintain spinal alignment and reduce lower-back pressure.
- Taller adults (or couples with one tall partner) who benefit from California King length (approx. 84") for extra legroom.
- People with lower-back discomfort who want targeted lumbar reinforcement from the gel support band and zoned coils.
- Shoppers who prefer a hybrid-style feel — some contour from gel memory foam combined with responsive innerspring support and cooler sleep characteristics.
Price Comparison & Trends
Compare prices: Serta 10.5 Cal King Mattress Perfect Sleeper Midsummer Nights Firm Innerspring Mattress Cal King Size Mattress Adult Mattress is available from 2 stores with prices ranging from $699.00 to $889.00. Lowest price found at Walmart.
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