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Tom’s Guide
Tom’s Guide
Technology
Ruth Jones

Helix Dawn vs Plank Firm: which firm mattress should you buy?

Firm Plank Helix Plank Firm the Plank Firm
On the left, a straight on shot of the Helix Dawn Mattress on a bed frame in a bedroom. On the right, a Plank Firm Mattress on a bed frame in a bedroom, shot from the side.
Helix Dawn

Type: Hybrid
Firmness: Firm
Height: 11.5"
Sizes: 8
Sleep trial: 100 nights
Warranty: Lifetime
Sale price: from $1,099 at Helix
Plank Firm

Type: Memory foam
Firmness: Firm, Extra Firm
Height: 10"
Sizes: 14
Sleep trial: 120 nights
Warranty: Lifetime
Sale price: from $561.75 at Plank

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