My lower left back keeps hurting, think it is from the cheap ti lam, now I never kena the super jia lat back pain but always have this pain at left area all the time. The last major back pain was in Feb 2016 , ti lam works to solve the major back pain but cause long-lasting pain, sigh. Or maybe the ti lam too cheap, too soft, can actually feel my backbone touching the floor. So since I got my bonus, instead of spending it on a laptop which I don't really need, might as well get a proper mattress, ended up deciding to check out IKEA since it is near my home. Before going I did some research on mattress, seems like latex is the best but it is more expensive. Note that there are different types of latex, natural is the best and most expensive. There are also synthetic and blended latex, I think these could be cheaper options. But online some people say synthetic can get very warm. There's also foam or spring mattresses, spring confirm out, reason is because kids like to jump