To give you an idea of where these tension spots might crop up, I placed a pressure map on top of each mattress and rested on my back, side, and stomach. We tested all of Sealy’s Hybrid mattresses for a detailed and comprehensive review. (Learn how we test). My hand sank snuggly into the bed and I felt some quality pressure relief. We want to help you get the best night’s sleep ever! Here’s our quick Video Review. When compared to its mattress comrade the Copper II, it’s a little bit softer, thanks to an additional layer of Sealy’s Cushion Extra Soft Foam. This is quite a lot of sinkage, which isn’t that surprising when you consider the thick layers of foam that overlay the pocketed coil system. While featuring less sinkage than the Kelburn, the Copper II still boasts a lot of the stuff. Pressing into this bed with a little hand pressure, the first thing I felt was the contouring of the memory foam in the comfort layer. This helps the mattress retain less heat. 4.8 51 Reviews. While feel is always going to be a personal thing, this will hopefully give you a better sense of the firmness you can expect from these beds! We each stretched out on the two mattresses, decided on our individual firmness ratings, averaged them together and then compiled them on the graph below. JavaScript seems to be disabled in your browser. Previous Slide. Reviews Kelburn II Cushion Firm. Play. This Sealy Kelburn mattress has just the right give to it and is comfortable without being too soft that you sink into it. Sealy Hybrid Performance Copper II and Kelburn II Review. Monday - Friday: 10:00 am - 9:00 pm EST Saturday: 10:00 am - 8:00 pm EST Sunday: 12:00 pm - 6:00 pm EST, Monday - Friday: 9:00 am - 6:00 pm EST Saturday - Sunday: 10:00 am - 6:00 pm EST, Sealy Posturepedic Hybrid Performance Kelburn II Mattress. For this review, I’ll be digging into the middle level of the Sealy Hybrid Line, the Sealy Hybrid Performance. The Sealy Hybrid Performance Kelburn II Cushion Firm mattress model is recommended by 65% of owners on GoodBed (based on 23 ratings). Conversely, if you’re after a plush vibe, you might want to consider the Sealy Hybrid Premium. As you likely noticed, the Kelburn and the Copper feature nearly identical constructions, with soft foam top layers up top supported by a Tempurpedic pocketed coil system below. As you can see on the graph above, my testers gave the Kelburn II an average firmness rating of 6. Keep in mind that for a firmer feel overall, you’ll be best served by the Sealy Hybrid Essentials. See More from Sealy. These springs lifted me up and out of the structure, allowing me to use the entire surface area of the bed. This innovative, hybrid mattress pairs the responsive support of coils with the body-conforming comfort of memory foam. I should note that this write-up is going to be a little different than my other Sealy Hybrid ones because the Performance comes in two models: the Kelburn II and the Copper II. When he’s not hopping on a new bed or working with our editorial team to whip up an engaging sleep education guide, you can find him reading books on world history, walking his dog Pepper, or searching for the best cheeseburger in New York City. Continue reading below for my Sealy Hybrid mattress review. Like the other Sealy Hybrid mattress I’ve reviewed, the Copper II features an extra layer of edge support coils, which help to bolster the sleeper across the entire surface area of the mattress. Stomach – As I landed on my stomach, I began to feel a bit of discomfort as my hips sank out of line with my shoulders. Do you have a Sealy Hybrid Performance Kelburn II Cushion Firm mattress? Read on for our detailed assessment of the Kelburn II’s pros and cons: The Sealy Hybrid Kelburn mattress is a nice, medium feeling mattress and we rate it 5.5 on our 10 point Comfort Scale (a 1 is hard, 10 is softest).