Theres like zero risk, worst case scenario, you have to waste some time setting up a return. - Interior is lined with a silky lining. Will definitely be getting more! These have a molded sole with less give than Cushions. Weightlifting, sure but running - no. Shipping is as communicated. If I can only keep one pair, I will choose the Sony. It just dawned on me as I was reviewing my account that I purchased them from Amazon. I have not noticed any increased battery drain with the firmware updates, or any loss of sound quality (mic included). Bought these for a trip to Disney.