Interior: Three 3″ layers of 100% natural latex.
Case: Organic cotton twill.
Top: 1″ Natural wool batting and circular knit organic cotton.
Bottom: Quilted Cotton

Our Latex

100% Natural latex using the “continuous pour” Dunlop process.
Manufactured in the U.S.A by Mountain Top Foam.
Raw latex sourced from plantations in Guatemala and the Asia/Pacific region.


Many people try to use Indentation Load Deflection, commonly known as ILD, as a metric when trying to make up their mind as to what mattress they should buy. We are happy to share our ILD data with you, but we also caution you not to base your decision on that number alone. ILD is only accurate when comparing the same type of latex from the same latex manufacturer. So, if you are doing a comparative analysis, we suggest you use the lower limit of the tolerance at the 40% compression rating when comparing our latex to Talalay. As for molded Dunlop from Sri Lanka or India, it’s important to look at the ILD in conjunction with the density. This is one of the reasons why we prefer to not publicly display the ILD as a marketing tool — because you need a decoder ring and a flashlight, and without it you may select the wrong firmness.

Another complication is our latex manufacturer also makes a blended latex with a lower density, but with the same ILD. If you tried comparing one mattress with a blended latex and one with a 100% natural latex using the same ILDs, the end result would be two totally different feeling mattresses.

And then, it turns out equivalent ILDs from the two Talalay producers, Latex International and Radium, don’t ultimately produce the same feel. We’ve only dealt with Radium and they are not sure why the numbers don’t match up feel-wise. Their thought is there is a difference in the way that LI measures the ILD, but they aren’t totally sure. All we know for sure is you can’t make a direct comparison based on ILD for Talalay, which isn’t used in our mattresses.

Now, we know it would be easier if there was one unified number, but feel is ultimately subjective and based on more than a single input test like ILD. So, please use caution when basing a decision on these numbers.

ILD @ 25% ILD @ 40% Density — kg/m3 Density — lb/ft3
Medium Latex 17.5 – 20.5 27 – 33 73 4.6
Firm Latex 29.5 – 32.5 44 – 54 90 5.6


Twin Twin XL Full Queen King
Height 10″ 10″ 10″ 10″ 10″
Width 38″ 38″ 53″ 60″ 76″
Length 74.5″ 79.5″ 74.5″ 79.5″ 79.5″
Weight 95 lbs. 100 lbs. 125 lbs. 150 lbs. 180 lbs.

Comfort Configurations

Soft Medium Firm Extra Firm
Top Layer 3″ Medium 3″ Medium 3″ Medium 3″ Firm
Middle Layer 3″ Medium 3″ Medium 3″ Firm 3″ Firm
Bottom Layer 3″ Medium 3″ Firm 3″ Firm 3″ Firm