Sounds like you are talking about the Millennium Ground Blind Chair. It came out late last summer. I bought one and can tell you a couple things. It's in fact 10.5 lbs., it won't go any lower than 19 in,and is the most comfortable chair I have ever used. Well worth the money. The 7.5 lbs. is what caught my eye. I ordered it because I had $130.00 in Bass Pro gift cards. I almost returned it due to the weight. I am a serious ground blind hunter. I pack my blind and bow around spring and fall,so I'm always looking for quality , light weight gear. It has the quality for sure but I have NO idea why they claim a 7.5 wt.