What is the approx weight of a mattress size–200x150x30cm?

Hi Reginald Rawlinson, 
 
Thanks for your question, 
 
All John Ryan By Design mattresses vary from mattress to mattress, 
 
Please take a look at the Understanding Beds weight guide for all mattress specifics such as individual weights and sizes for each product. 
 

 
I hope this helps,