ABOUT THE The Rock Mattress
What separates the Rock from the rest of its range is a 20cm depth. That shows up as a surface that stays level all night, delivered through foam construction and an extra firm feel. A natural fit for back sleepers.
The Rock Mattress
The InstaMattress The Rock Mattress offers an extra firm feel built on a comfort foam support system. Featuring high density advanced foam. It performs particularly well for back sleepers, back support, edge support, making it a strong match for customers who value these qualities. The feel is balanced and supportive, tailored to its construction profile.
SINGLE
Or £29/mo with Klarna — 12 months, 0% APR
SIZE
CHOOSE A DELIVERY DATE
Comfort & support scored in our Assessment Studio — so your match is measured, not guessed.
Checked against the UK market for its construction class — a real price, never a fake sale.
Construction & Specification
Inside the The Rock Mattress
The The Rock Mattress is in stock.
Free delivery Monday 5 October · 100 night comfort trial · 12-year guarantee
Swipe — photos · sizes
The Rock Mattress
The InstaMattress The Rock Mattress offers an extra firm feel built on a comfort foam support system. Featuring high density advanced foam. It performs particularly well for back sleepers, back support, edge support, making it a strong match for customers who value these qualities. The feel is balanced and supportive, tailored to its construction profile.
SINGLE
Or £29/mo with Klarna — 12 months, 0% APR
SIZE
CHOOSE A DELIVERY DATE
Comfort & support scored in our Assessment Studio — so your match is measured, not guessed.
Checked against the UK market for its construction class — a real price, never a fake sale.
100 night comfort trial · Free express · 12-yr guarantee
