I bought this suit because I love being outdoors with my baby and didn't want the cold weather to hold us back.  I am extremely pleased with this.  I could put the baby in it with just her fleecy onesie underneath and she would be toasty warm after a forty minute walk in 20 degree weather.  She's a big baby (at eight months, she wears twelve-eighteen month clothes) and the 18 month size fits very well with room to spare.  Will buy this suit again next winter.  The price is well worth it if you're in a very cold climate or like to take baby for walks in the cold.