Definately agree with trying them on, (remember that you are pregnant and they fit differently to when you are'nt anymore!!!!!) I bought a couple off ebay and they are definately not comfortable ( I constantly felt like I had to adjust the postion). I ended up going back to my baby bjorn, bubs loves it more than the sling and I feel loads more comfortable wearing it. Shop around, maybe even wait till you have bubs??? Most of all good luck.