10Cooling Test
The Saatva started with a temperature of 81.4° F. After lying on the mattress for 15 minutes the mattress got up to 94.0° F. At that point, we waited 5 more minutes to see how much the mattress would cool down and found it was able to reduce the temperature from 94.0° down to 90.1°
Baseline Temp.|81.4° F
Max. Temp|94.0° F
Ending Temp.|90.1° F
- Baseline Temperature – the temperature of the mattress before anyone lies on it
- Maximum Temperature (0 minute) – the temperature of the mattress after lying on it for 15 minutes
- Ending Temperature (5 minute) – the temperature of the mattress after being lied upon and having no one on it for 5 minutes
Our test results offered a bit of a mixed bag. Looking at the objective data vs. other mattresses we’ve tested, the Saatva was on the higher end.
However, in all of my sleep tests over the years on the Saatva Classic, I have never once felt that it slept warm even to the slightest degree
In a contest between what the data is telling me vs. what my experience tells me, I tend to want to give more leeway to my experience.
It’s possible that the surface level of the euro-style pillowtop does indeed hold onto heat more. However, when lying on the mattress your body is interacting between layers of coils, air, and the pillowtop, providing a greater level of overall cooling.
Heat Dissipation Over Time
It’s also possible that the adjacent window played a factor in this test (we didn’t have a window this close in many of our other cooling tests). In the coming weeks, we are planning to re-do this test to verify our findings.
Overall, it is still my view that the Saatva mattress will sleep cooler relative to most foam mattresses, but slightly warmer compared to coil mattresses that have a thinner top comfort layer (or non-pillow top layer).
10Motion Transfer Test
The level of motion transfer is documented in the video below.
Overall, the Saatva has moderate levels of motion transfer.
These levels are going to be higher than what you’d typically see with a memory foam mattress, but not as high as traditional innerspring (due to the thick euro-style pillowtop layer).
Our accelerometer tests measured a total acceleration range of 5.86 m/s², which is essentially average compared to all mattresses we’ve tested to date. Our average acceleration range is 5.87 m/s². That said, being average is still great in this case of motion transfer.
Max. Acceleration|3.59 m/s²
Min. Acceleration|-2.27 m/s²
Accel. Range|5.86 m/s²
As you can see in the table below, the initial bounce is fairly intense, but subsequent bounces get increasingly less impactful. By the 0.2 second mark the motion is minimal.
Saatva motion transfer graph
The entire span of this chart is less than 0.5 seconds. So while it is definitely a high bounce, motion transfer duration is fairly quick.