Silentnight Ortho Sleep Mattress

A firmer mattress is designed for people who are of a larger statures and back sleepers. For the latter, back sleepers will receive proper support for the lower back which helps promote healthy spinal alignment. As for the former, a firmer mattress will give people of a larger weight group better support and ensures weight will be evenly distributed across the mattress. You'll wake up feeling like you've been properly supported throughout the night without aches and pains if you fit into either of these categories. 

If the mattress neither gets firmer nor softer over a period of prolonged use, then it's certainly of a good standard. Silentnight have incorporated their own design of an open coil spring system, which has been designed in such a way to combat the woes of a standard bonnel spring mattress. As the coils run in a continuous wire length ways across the mattress, the chances of roll together are decreased and it will feel firmer for longer.