I have set of a brand-new-with-tags OR Helium pants and jacket. Both are unworn except to try on. The pants are a bit too small and the jacket didn't fill the niche I thought it would. They each weight in at around 5.5 oz. The pants are waterproof, but the jacket is the wind hoodie and not the rain jacket. 

Asking $85 each. All business is done through PayPal invoicing / money requests. No friends and family. 

Imgur albums with more images and verification: Jacket and Pants