Casper Sleep Original Hybrid King Mattress – Medium Feel

Product Overview

The Casper Sleep Original Hybrid King Mattress offers a balanced combination of foam comfort and spring support, designed to deliver consistent restorative sleep for all body types. Ideal for side, back, and stomach sleepers, this mattress features a dual-layer foam system paired with durable springs to provide targeted support and pressure relief. Its medium feel ensures a comfortable sleeping surface without being too firm or too soft, promoting proper spinal alignment throughout the night. Engineered with motion isolation and breathable materials, it helps reduce disturbances from movement and maintains a cooler sleep environment.

This mattress comes with a 100-night trial, allowing customers to test its performance risk-free. It is CertiPUR-US certified, meaning it meets strict standards for content and emissions, ensuring peace of mind regarding material safety. The hybrid design merges the contouring benefits of memory foam with the responsiveness of springs, offering both comfort and durability. Whether you’re replacing an old mattress or upgrading your sleep setup, this model supports long-term use with reliable structure and performance.

Key Features

• Two-Layer Foam System: Combines comfort and support layers to cushion the body while maintaining structural integrity over time. The top layer conforms gently to the shape of the sleeper, reducing pressure points on hips, shoulders, and other sensitive areas.
• Resilient Springs: Integrated within the foam layers, these springs enhance airflow and provide bounce, helping the mattress return to shape quickly after weight is removed. This improves edge support and reduces the likelihood of sinking in the center.
• Zoned Support Technology: Features varying firmness levels across the mattress surface, with softer zones under the shoulders and hips and firmer zones along the lumbar region. This promotes natural spinal alignment and reduces strain on key pressure points.
• Motion Isolation: Designed to minimize transfer of movement between partners, making it suitable for co-sleepers who are sensitive to disturbances during the night.
• Breathable, Cooling Memory Foam: Incorporates open-cell foam technology that allows air to flow freely through the mattress, helping regulate temperature and prevent overheating during sleep.
• CertiPUR-US Certified: All foam components meet rigorous testing standards for low VOC emissions, reduced off-gassing, and absence of harmful substances such as phthalates, PBDEs, mercury, and lead.
• 100-Night Trial Period: Customers can test the mattress in their home for up to 100 nights. If unsatisfied, they may initiate a return under Casper’s satisfaction guarantee.

Technical Specifications

• Size: King (76″ W x 80″ L)
• Mattress Height: Approximately 13.5 inches
• Core Construction: Hybrid design combining memory foam and pocketed springs
• Top Comfort Layer: Breathable memory foam with open-cell structure
• Support Layers: Zoned foam sections with integrated spring units
• Edge Support: Reinforced perimeter for stability when sitting or sleeping near the edge
• Certifications: CertiPUR-US certified for foam content
• Weight: Approximately 120 lbs (may vary slightly by batch)

Benefits & Use Cases

The Casper Original Hybrid King Mattress is well-suited for couples seeking a balance of comfort and motion control, particularly those who move frequently during sleep or share the bed with a partner of different weight or preferred firmness. Its zoned support system adapts to various sleeping positions, providing tailored reinforcement where needed most—ideal for individuals with mild back discomfort or those transitioning from softer traditional mattresses.

The hybrid construction makes it compatible with most adjustable bases and standard bed frames, including platform beds and foundation boxes. Its medium feel appeals to a broad range of sleepers, from light to average weight profiles, without being overly firm for side sleepers or too plush for back or stomach sleepers.

The breathable foam layers help maintain a cooler sleep surface compared to all-foam models, which is beneficial for hot sleepers or those living in warmer climates. The motion isolation feature enhances sleep quality for light sleepers or shift workers who need uninterrupted rest.

Important Notes

The mattress arrives compressed and vacuum-sealed in a box for convenient delivery and setup. It will expand gradually over several hours after unpacking and should be allowed to fully decompress before use. Placing it directly on the bed frame or foundation is recommended; using a metal grid frame without a supportive base may affect performance and longevity.

Customers should allow at least 24–48 hours for full expansion and settling of the foam and springs. While the mattress includes a 100-night trial, final delivery and removal of the old mattress may require scheduling depending on location and retailer policies. Always check with the seller for current warranty terms and return eligibility conditions.