We used this for the first time this past weekend and our LO was warm, warm warm!  It was alternately raining and snowing all day as we wanted to see the lights downtown Chicago.  We were outside for almost 2 hours, and she stayed really warm the whole time.  We did put a skull cap hat on in addition to the snowsuit, but she (and I) didn't mind a  bit.  The rain was repelled and the snow never accumulated on her. We chose this over the zip in fleece snowsuit because we wanted something she'll easily slip in and out if.  Since she wears some fleece tops and bottoms, putting her in a another fleece lined snowsuit didn't fit her needs.  Columbia makes great products at reasonable prices.  I highly recommend this product!