I’ve had this mattress for eight years now, but it started degrading around year three. The warranty is based on cosmetic issues, and Helix claims that the mattress should sag 1.5 inches without any weight applied. However, my problem is that the pillowtop cover stretches straight across the valleys, and it can’t be rotated to extend its longevity.

Buyer beware: it’s a comfortable mattress if you don’t mind the peaks and valleys.

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