Surlunkeys 14 inch California King Size Hybrid Mattress in a Box, Cooling Gel Memory Foam Mattress, Medium Firm

I weigh 170lb and previously suffered from lower back strain and light sleep. Since using this mattress, its enveloping feel is superb: When I lie down, I can clearly feel the mattress gradually conforming to my body's curves, especially when sleeping on my side. My shoulders and hips sink in while my lower back receives excellent support, and my lower back pain is significantly reduced in the morning. Pressure distribution: For someone like me who sits at a desk for long periods and experiences lower back discomfort, it truly provides relief. The mattress doesn't feel hard or constricting; instead, it provides even support. My partner and I have different sleep schedules, and when she turns over or gets up, I barely feel any vibration on my side – this is absolutely perfect. "Emergency wake-up": It does have a "slow rebound" characteristic; lying down feels very relaxing, but when I'm sleepy in the morning, getting up immediately requires a bit more effort – it's like a gentle "reluctance" to stay. Overall conclusion: This is a mattress that is very suitable for side sleepers, light sleepers, and those who need to relieve body pressure. If you're looking for a cloud-like enveloping feel and absolute quietness, it won't disappoint. Highly recommended, especially for those with lower back discomfort and sleep problems.