{"id":7403,"date":"2026-08-26T19:10:39","date_gmt":"2026-08-26T17:10:39","guid":{"rendered":"https:\/\/www.royalcomfort.cz\/tvrdost-matrace-podle-vahy"},"modified":"2026-08-26T19:10:39","modified_gmt":"2026-08-26T17:10:39","slug":"mattress-firmness-by-weight","status":"publish","type":"post","link":"https:\/\/www.royalcomfort.cz\/en\/tvrdost-matrace-podle-vahy","title":{"rendered":"Which mattress firmness according to weight? Clear chart from SOFT to ULTRA HARD"},"content":{"rendered":"

How is mattress firmness determined by weight and why is weight the most reliable guide when choosing? In a clear table, you will find recommendations ranging from SOFT to ULTRA HARD.<\/strong><\/p>\n

The firmness of a mattress according to weight is the first figure from which everything else follows. The exact same mattress behaves completely differently under a person weighing 55 kilograms compared to someone weighing 110. What one person perceives as pleasantly firm support, another finds hard as a board \u2014 and vice versa. Therefore, when making a choice, we do not start with the question \u201edo you want a soft or a firm one?\u201c, but rather with how much you weigh and how you sleep.<\/p>\n

\"Mattress
The cross-section of the Majesty Premium mattress shows why firmness is not just a matter of the surface \u2014 the comfort layers on top deal with the feel, while the pocket springs inside bear the weight.<\/figcaption><\/figure>\n

Why mass matters more than first impressions<\/h2>\n

The mattress acts as a spring system designed to keep the spine in its natural alignment. When you lie down, your body presses into the mattress \u2014 and the depth of that sinking depends on the force you exert on the material.<\/p>\n

A lighter person simply won't sink into a firm mattress. Their shoulders and hips will stay on the surface, the lumbar region will hang in empty space, and tension will build up there overnight. A heavier person has the opposite problem: on a mattress that is too soft, they will sink into the shape of a hammock and their spine will sag downwards. Proper spinal support helps to relieve tension in the back and shoulders \u2014 and that is precisely what the choice of firmness relates to.<\/p>\n

A quick test in the shop won\u2019t reveal this. When you lie down for two minutes, you mainly notice the comfortable outer layer, not how the construction will hold up after six hours. That\u2019s why we recommend starting with the figures and only then fine-tuning based on how it feels.<\/p>\n

Mattress firmness by weight: a clear guide<\/h2>\n

The table applies to one sleeping person and for deep mattresses over 24 cm<\/a>, where the load-bearing layer is thick enough to compensate for the differences in weight at all.<\/p>\n\n\n\n\n\n\n\n\n\n
Weight<\/th>\nRecommended hardness<\/th>\nTypical models<\/th>\nWhat to watch out for<\/th>\n<\/tr>\n<\/thead>\n
up to 60 kg<\/td>\nSOFT (soft)<\/td>\nDreamify Soft, Imperial Suite Soft<\/td>\nA firmer mattress won\u2019t sag in the middle<\/td>\n<\/tr>\n
60\u201380 kg<\/td>\nSOFT to MEDIUM<\/td>\nRoyal I., Dreamify Medium<\/td>\nIt depends on your sleeping position \u2014 it\u2019s a bit softer if you sleep on your side<\/td>\n<\/tr>\n
80\u2013100 kg<\/td>\nMEDIUM (medium-hard)<\/td>\nRoyal II, Luxury, Comfy, Majesty Premium<\/td>\nThe broadest category, suitable for most adults<\/td>\n<\/tr>\n
100\u2013120 kg<\/td>\nHARD (hard)<\/td>\nDiamond, Imperial Suite, Dreamify Hard<\/td>\nMonitor the side reinforcement too, as people tend to sit on the edge<\/td>\n<\/tr>\n
over 120 kg<\/td>\nULTRA HARD<\/td>\nSwitzerland Original, Dreamify ULTRA HARD<\/td>\nCheck the load capacity of the specific model<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The boundaries between the categories aren\u2019t clear-cut. If you\u2019re on the cusp \u2014 say, 82 kg \u2014 it\u2019s worth trying both neighbouring options. In the category medium-firm mattresses<\/a> You\u2019ll find the most models there precisely because it encompasses the largest section of the population.<\/p>\n

Weight isn't everything: sleeping position and body shape<\/h2>\n

Weight determines the initial category; body shape and sleeping position shift it up or down by half a degree.<\/p>\n