@jet757f - The reason for the difference in ILD and being a range instead of a single number is due to that topper being Natural Talalay instead of a blend. Blended Talalay is able to be manufactured more accurately to a specific target ILD while Natural is normally within a specified range. Natural is also more expensive… so if you can find a supplier for Blended Talalay it will likely be less expensive and specified as 28ILD.