V-Max
http://weightvest.com/mensvests.html
Probably the 75 pound one.
X-Vest
http://cgi.ebay.com/Xvest-Strength-Training-Weighted-Exercise-Vest-84lbs_
W0QQitemZ250156568131QQihZ015QQcategoryZ28067QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
While searching the archives I found these two brands mentioned the most. The V-Max has more durable materials, though I doubt I would be able to beat up the X-vest that much. The X-vest seems like it may be more ergonomic/comfortable. What are your thoughts?