cm, i got the one from toys r us (i think it's about $20) and LOVE IT. i am not a bells-and-whistles kind of mom, and this is the most basic umbrella stroller i could find. my son has always been in the 97th percentile for height and weight, and it held up fine. although, he also walked at 9 months so we probably didn't use it 'as long' as we might have with another child. my son is now a rambunctious 3 year old almost 4 ft tall and 42 lbs, and we haven't used it in awhile, but i am almost certain if we ever had to, it would still hold up. good luck! you can sure drop a lot of money on something you'll only use a year or two!