Firmness and intended sleeper
- Helix Dusk
- Medium; 5–6/10; designed for back and stomach sleepers
- Helix Plus
- Medium-firm; 7/10; designed for plus-size and big-and-tall sleepers in all sleep positions
Why it matters: Dusk: It combines a balanced surface with livelier resistance beneath the hips, so the middle settles less than on Moonlight. Its responsive layers support the hips and limit excess lower-back sink for sleepers facing up or down. Plus creates a firmer, more broadly supportive surface with less dependence on one position. Choose Dusk when its calibration matches how you sleep; choose Plus when body weight, combined load, or durability under concentrated nightly use is the stronger concern.



