--- title: Will an mattress develop body impressions? description: National Mattress Help Center --- [Skip to content](https://help.nationalmattress.ca/knowledge-base/will-an-extra-firm-mattress-develop-body-impressions-en#main-content) English - Canada Show submenu for translations [More support](https://help.nationalmattress.ca/knowledge-base/kb-tickets/new?hsLang=en-ca) [Customer portal](https://support.nationalmattress.ca/tickets-view?hsLang=en-ca) ![National Mattress - company logo](https://help.nationalmattress.ca/hs-fs/hubfs/National%20Mattress%20Outlet%20Sale%20Logo-2.png?width=150&height=151&name=National%20Mattress%20Outlet%20Sale%20Logo-2.png) - [View All Mattresses](https://www.nationalmattress.ca/all-mattresses) - [Mattress Accessories](https://www.nationalmattress.ca/accessories) - [Deals](https://www.nationalmattress.ca/deals-and-flyers) - [Visit Us](https://www.nationalmattress.ca/visit-us) Open main navigation Close main navigation - [View All Mattresses](https://www.nationalmattress.ca/all-mattresses) - [Mattress Accessories](https://www.nationalmattress.ca/accessories) - [Deals](https://www.nationalmattress.ca/deals-and-flyers) - [Visit Us](https://www.nationalmattress.ca/visit-us) - English - Canada Show submenu for translations - [More support](https://help.nationalmattress.ca/knowledge-base/kb-tickets/new) - [Customer portal](https://support.nationalmattress.ca/tickets-view) - [Try Our Mattress Selector Tool](https://www.nationalmattress.ca/mattress-selector#selector-tab) [Try Our Mattress Selector Tool](https://www.nationalmattress.ca/mattress-selector#selector-tab) How can we help you? - There are no suggestions because the search field is empty. 1. [National Mattress Help Center](https://help.nationalmattress.ca/knowledge-base?hsLang=en-ca) 2. [Extra-Firm](https://help.nationalmattress.ca/knowledge-base/extra-firm?hsLang=en-ca) # Will an mattress develop body impressions? Even extra-firm mattresses can develop slight body impressions as the top layers break in, but these are usually shallower than on softer beds. 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