The Helix Nightfall mattress is one of 9 mattresses that Helix sells. But only the Nightfall is made specifically for taller and heavier sleepers.
Helix describes the Nightfall as,
“a Taller 12 inch mattress with an extra layer and higher density materials to provide the right comfort, support, and durability.”
The only other online mattress I've reviewed that is designed specifically and exclusively for plus-sized individuals and couples is the Big Fig. I briefly cover the differences between these two mattresses at the end of this review.
For more plus-friendly mattress choices and recommendations, read my guide to the best mattresses for plus-sized sleepers.