What temperature range is this North Face...
What temperature range is this North Face Boundary Triclimate Jacket good for?
what are the sizes for jackets
North Face dose not give temp. ranges, unfortunately. This will be warm enough for a active youth. However, down jackets tend to be the warmest, providing they have a water proof 'shell' to keep the down dry.
As far a sizes go...click on the size chart above in blue, by the little ruler.
Hope this still helps.