Any thoughts on that new line of mattress from Boyd? Their previous line (NATURAL FLEX) is all over the web with diffferent names (Eco-Lux; LATX; Classic Dream; etc.). The new line NATURAL FLEX ULTRA, doesn't seems available yet on mainstream online stores. When we click on the mattress photo there's a pdf explaining the layers in it. 

Would it be a good mattress for a 247 lbs side sleeper (and his smalish back sleeping wife 140lbs)?