I need it for exterior work at 10F. Do you recommend it?

No, I don’t. This jacket is thin for this temperature

Is this the same quality compared to the one sold on Macys?

Nothing compared to Macy’s quality. This is very inferior as compared to Macy’s . We had one from Macy’s and when we ordered from this, we returned instantly

My son is 13, 5'10", 136 lbs. his chest and waist are 32". he normally wears a l or xl in tshirts, sweatshirt. reviews & chart suggest m. thoughts?

I'd recommend the medium size. I've gotten the L and it fits me perfectly, but he weights much less and is shorter than me, so I think M will be just fine.

This jacket Tommy Hilfiger jacket has been made with a wind resistant shell fabric. This technology will keep the wearer comfortable and provide protection from inclement weather. However, it is not waterproof.