Helix’s USP is that it makes a mattress to suit every body type and sleeping style. The Helix Twilight is a firm mattress for side sleepers — which, on paper, sounds like a bit of a dichotomy.

Helix is celebrating Sleep Week by taking 27% off all mattresses with code TOMS27. This is one of the largest discounts we've ever seen from the brand — and we normally don't see this type of ...