Coolvie Firm Twin Mattress for Adults in a Box, 12 Inch Twin Bed Mattress with Extra Lumbar & Shoulder Support, Hybrid Memory Foam & Pocket Spring for

Coolvie Firm Twin Mattress for Adults in a Box, 12 Inch Twin Bed Mattress with Extra Lumbar & Shoulder Support, Hybrid Memory Foam & Pocket Spring for

Say Goodbye to Stuffy Heat-Coolvie hybrid twin mattress features gel-infused memory foam that actively absorbs body heat to create a cooling layer, combined with a bottom layer of 3D breathable coils that accelerate air circulation. This dual cooling system delivers long-lasting comfort, with tests showing the sleep surface temperature is 2-3°C lower than ordinary mattresses Sleep as Soundly as a Baby-The ergonomically zoned pocket springs feature 20% denser coils in the lumbar area, ensuring minimal sinkage (≤3cm) when turning over to relieve body pressure. With superior motion isolation, partner disturbances during nighttime movements are reduced by 70%—a blessing for light sleepers Enhanced Support for Carefree Sleep-Upgraded with built-in pocket springs and reinforced with high-density support foam along the sides, this hybrid mattress maintains its shape even with prolonged sitting. The enhanced stability not only improves safety but also extends the mattress's lifespan, ensuring lasting comfort Healthy Fabric for All-Day Comfort Made with premium, skin-friendly fabric that meets maternal & infant safety standards—free from fiberglass, formaldehyde (0%), and fluorescent agents. Its anti-static design provides a cloud-like, bare-skin sleeping experience CertiPUR-US Certified foam for Your Peace of Mind-Coolvie mattress twin size uses CertiPUR-US Certified foam that contains no harmful substances, ensuring safety and durability while meeting all applicable mandatory and voluntary safety standards for mattress products Easy Setup, Install by Yourself in Minutes-Featuring a smart, sleep-ready design straight out of the box. Our vacuum-sealed rolling technology reduces shipping volume by 80%, making it light enough for anyone (even women) to handle effortlessly. Unbox and watch it automatically expand to full thickness within 72 hours (for best results, lay flat undisturbed for the first 24 hours) Professional Brand Service for a Worry-Free Purchase-Every twin mattress 12+ inchs undergoes rigorous quality testing and comes with a 100-night trial. Our customer service team is always available to address any inquiries

12 Inch Twin Firm Feel, Heavier Coils for More Support - Bed in a Box -Pocket Innersprings for Motion Isolation- Pressure Relief -  & Targeted Support

Mettress features:

Cooling and motion isolation: The coil system is 20 times more breathable, keeping you comfortably cool. The sleeping mattress isolates motion for a ideal undisturbed sleep even if your partner moves at night.

Comfortable and Support:3 layer premuim foam and pocket springs design give you firm feeling, keeping body properly aligned, pressure relief & heat dissipation. How to set up the mattress:

- Step 1: Open the box.

- Step 2: Keeping the mattress wrapped, slide it onto the surface of your bed frame.

- Step 3: Proceed with caution!;Using the special unpacker inside with the mattress, carefully cut the plastic, being careful not to cut into the foam of your mattress.

Please keep distance and enough room to the mattress when opening, as it may have a risk to smack people when expanding.

- Step 4: Unroll your mattress.

- Step 5: Allow 48-72 hours for the mattress to regain its full shape.

After testing, the hardness value of our mattress is around 7.4, which belongs to the strong support level in the professional hardness system and is suitable for the following population:

1. People with lumbar spine problems or those who need support for their spine

Patients with lumbar muscle strain and lumbar disc herniation: A hard mattress can provide stronger support, avoid lumbar depression, maintain the natural physiological curvature of the spine, and reduce disc pressure.

Patients with scoliosis or postoperative recovery need stable support to prevent spinal deformation or promote recovery.

2. People who are accustomed to sleeping on their backs or on their backs

3. Sleeping on your back: A hard mattress can evenly distribute body weight, avoid excessive pelvic sinking, and maintain spinal alignment.

Lying down: A mattress that is too soft can easily cause the waist to collapse, while a hard mattress can reduce spinal distortion.

4. People with a high body weight (BMI ≥ 25)

People with heavier weight tend to get stuck in soft beds, leading to insufficient support. Hard mattresses can better support the body and avoid joint pressure concentration.

4. Children and adolescents

During the growth and development stage, the spine has strong plasticity, and a hard mattress helps maintain correct posture and prevent hunchback or spinal deformities.

5. Elderly individuals (depending on the situation)

Osteoporosis or joint degeneration: A moderat