Lucid 4 Inch Cooling Gel Memory Foam Mattress Topper, Ventilated, King Size

Price: $149.99 - $127.49
(as of Oct 07, 2026 16:21:31 UTC – Details)


The LUCID 4 Inch Gel Memory Foam Mattress Topper adds new life to and enhances the comfort of an existing mattress. LUCID’s thickest mattress topper, this ultra thick comfort layer is made of plush, gel-infused memory foam for supreme comfort. LUCID memory foam compresses evenly beneath the unique weight and shape of a body, conforming to curves to provide comfort. Top quality foam is infused with advanced gel material that captures and distributes heat for a more comfortable sleep temperature. Mattress topper has a ventilated design that improves breathability for refreshing sleep.
Memory Foam
ULTRA PLUSH FEEL – Lucid memory foam mattress toppers are designed to enhance a mattress, making your sleep experience softer; four inches of plush memory foam feels light, airy, and responsive
COOLER SLEEP: Cooling gel is infused in the memory foam to help regulate your sleep temperature and keep you comfortable all night long; precision-cut ventilation channels help increase airflow to keep you cooler
CHOOSE YOUR SIZE: 2-inch profile adds a soft layer of support to any mattress; 3-inch profile is very plush and adds even more comfort; 4-inch profile has an extra deep, plush, sink-in feel
3-YEAR WARRANTY: This mattress topper is assembled with CertiPUR-US certified foam and backed by a 3-year limited warranty; use with a waterproof mattress protector for best results
SHIPS IN A BOX: Mattress topper is compressed and shipped in a box for ultimate convenience; when it arrives, simply unroll it and allow 24-48 hours to fully decompress
Customers find the mattress topper comfortable and report improved sleep quality, falling asleep quickly and waking up refreshed. The softness and fit receive mixed feedback – while some find it super soft and well-fitting, others say it’s too squishy and sinks too much. Pain relief experiences are mixed, with some reporting no back pain in the morning while others say it made their back hurt worse. Heat management is also mixed, with some saying it keeps them cool while others find it too hot. Durability is a concern as the mattress topper tears easily, and mobility is problematic as customers report difficulty getting in and out of bed.