Bonnell Spring

Bonnell spring mattress, also known as open coil spring mattress, is the most basic and traditional innerspring mattress. The Bonnell coil has an hourglass shape, which is broader at the top and bottom than in the middle, and it is connected together with a mesh of metal to make a spring system. 
  
  The Bonnell spring mattresses typically contain around 300 springs. It is constructed in such a way that provides maximum durability and enhanced support. Yet, there are complaints of aggravated pressure points and discomfort. This spring system makes up the middle and lower layer of the mattress, usually below the comfort layer. 
  
  Pros:
  The Bonnell spring mattresses offer multiple benefits.
  •	Provides additional comfort
  •	Offers great support to the body
  •	Provides maximum durability
  •	Utilises quality materials and have traditional even feel
  
  Cons:
  Some of the significant disadvantages are mentioned below. 
  •	Motion transfer issues, disturbing your good night’s sleep
  •	Over time, you will see that there is a dip in the middle, thereby causing discomfort