The Ruby Ortho is our new luxury open coil mattress made using time honoured manufacturing techniques. This new addition to the range has been introduced in response to demand from our customers for mattresses with firm edge support around the perimeter of the mattress. Due to the addition of firm wall side supports which are attached round the perimeter of the mattress this mattress provides supreme levels of edge support which are only usually found in mattresses which are normally twice the price. An additional benefit to this mattress is that the springs are manufactured from 13 gauge wire which is much thicker & firmer than the standard wire which is normally used. These features combined with generous layers of fillings combine to make the Ruby premier model in our open coil range. Medium / Firm Support