I have that carrier and I love it!! I paid less than $30 though (I think I paid 20 or 25). Miko is 2.5 yrs old and 7 lbs but slightly overweight and he fits perfectly into the carrier. I think at 6 months he weight around 4 lbs but I really can't remember. Its all about height and length though becuase I see pics of malts here that seem to weigh less than Miko but seem to have taller and longer frames?? Pictures are deceiving though and really you just don't know at what weight/height/length your baby will end up at. But I love the carrier!!