Not the best Sofa bed out there in the market but one of the cheapest options I could find. Feels a little bit flimsy and the bed conversion system could have been more effective. One needs to be rather mindful to place the support rods properly. But is nonetheless ok for occasional use. The little storage is handy to throw in the spare pillows and duvet.
Assembling the backrest onto the base unit during the setup was a bit of nightmare. 
Personally, I would recommend check out the Clic clac sofa beds on Wayfair. My sister in law got that and I think thats a more sturdy sofa bed.