Grbsy Firm Mattress Short Queen Size - 12 Inch Cooling Gel Memory Foam RV Mattress, Back Pain Relief, Ice Silk Cover, CertiPUR-US Certified

Product Overview

The Grbsy mattress measures 75 x 60 x 12 inches in the Short Queen size reviewed here, weighing 61.3 pounds. It features a 4-layer construction starting with a cool-to-touch IceSilk cover that wicks away moisture. Beneath this is gel-infused memory foam designed to reduce heat buildup, followed by an egg-crate airflow layer that creates channels to move warmth and moisture away from the body. The support core uses high-density foam with a 7-zone ergonomic design that reinforces shoulders, lumbar, and hips for targeted pressure relief. The HEXACELL dynamic-response memory foam layer adapts to body curves and sleep position changes in real time using a hex-honeycomb structure. This mattress is assembled in the USA with copper, bamboo charcoal, and green tea additives to help manage heat, moisture, and odors. It arrives vacuum-sealed in a compact box that fits through narrow doorways and hallways, making it suitable for apartments, dorm rooms, RVs, and homes with limited access. After unboxing, the mattress expands within hours and is ready for use the same night. The manufacturer offers multiple size options including Twin, Twin XL, Full, Short Queen, King, and California King in both 12-inch and 14-inch thicknesses to accommodate different body types and sleeping setups. The firmness is rated approximately 7.5 out of 10, making it ideal for those who prefer firmer support. The knit side fabric provides 360-degree ventilation, while reinforced edges maintain stability for sitting and sleeping near the sides. Care involves using a mattress protector and spot cleaning the cover as needed.

Design & Build

The Grbsy mattress features a thoughtful 4-layer construction designed for both support and temperature regulation. The top layer consists of an IceSilk cover that feels cool to the touch and wicks away moisture, creating a drier sleep surface. Beneath this is gel-infused memory foam that helps dissipate body heat, followed by an egg-crate airflow layer with channels that move warmth and moisture away from the sleeper. The support core uses high-density foam with a 7-zone ergonomic design that specifically reinforces the shoulders, lumbar, and hips for targeted pressure relief. The HEXACELL dynamic-response memory foam layer incorporates a hex-honeycomb structure that adapts to body contours and position changes in real time. All materials are CertiPUR-US certified for safety and OEKO-TEX Standard 100 certified for the cover, with a 100% fiberglass-free inner liner. Copper, bamboo charcoal, and green tea additives help manage heat, moisture, and odors throughout the mattress lifespan.

The mattress arrives vacuum-sealed in a compact box that makes transportation and setup remarkably easy. Once unboxed, the mattress expands to its full 12-inch thickness within hours, with many reviewers reporting complete expansion within 3-4 hours. The knit side fabric provides 360-degree ventilation around the entire mattress perimeter. Reinforced edges maintain stability when sitting or sleeping near the sides, preventing the sagging common in some memory foam mattresses. The firmness is rated approximately 7.5 out of 10, making it suitable for those who prefer firmer support. Cleaning involves using a mattress protector and spot cleaning the IceSilk cover as needed. The portable box design makes this mattress ideal for apartments, dorm rooms, RVs, and homes with narrow hallways or staircases where traditional mattress delivery would be challenging.

Performance

Reviewers consistently praise the mattress's firm support and cooling properties. Many users report significant improvement in back pain, with one reviewer noting their lower back pain completely disappeared after switching to this mattress. The 7-zone ergonomic design provides targeted support to key pressure areas, helping maintain proper spinal alignment throughout the night. The HEXACELL dynamic-response foam adapts to body curves and position changes, delivering steady support where discomfort often starts. Multiple reviewers mention the mattress feels supportive without being too hard, providing good back support while remaining comfortable on shoulders and hips. The high resilient foam layers effectively absorb vibration and noise, with several users reporting minimal motion transfer that reduces partner disturbance during sleep.

The cooling system performs well according to user feedback. Reviewers note the IceSilk cover feels cool to the touch and helps prevent overheating during the night. The gel-infused memory foam reduces heat buildup, while the egg-crate airflow layer creates effective channels for moisture and warmth dissipation. Several hot sleepers report staying comfortable throughout the night without excessive sweating. The mattress expands evenly after unboxing with minimal odor, with most reviewers noting any initial smell dissipates quickly. Edge support remains stable for sitting and sleeping near the sides, though some firm mattresses can feel initially firm until broken in. The mattress maintains its shape and support over time according to early user reports, though long-term durability will require more extended use to fully assess.