I've got a buddy that's big and tall and he said cycling gear can be tough to find. Most Asian sources won't have what you need. Many reviews complain about how cycling clothes are poorly marked for size. For example I'm 6'2" and about 175lb and I have a pair of thermal cycling pants that are XXL. They are from China. I really like them, well made, just not sized properly. If you go on Amazon check the reviews carefully for size recommendations. They often suggest going up several sizes.
Here are some jackets made in America. Great reviews, not cheap though.
Big and Tall men's cycling jackets and windbreakers for cyclists. Ride longer each year with the proper cycling jackets. Bike Jackets keep you warm and dry.
www.aerotechdesigns.com
Not terrible. I have a paper thin windbreaker jacket made by Pearl Izumi, I think it's made in Asia and it was $65, several years ago. The materials they use these days are thin and fairly warm.