Review on Portzon Sauna Shirt For Men Sauna Suit For Men Heat Trapping Pullover Sweat Enhancing Vest Sweat Compression Vest Shapewear by Michael Wilder

These do what you'd expect; nothing crazily special but they stay inflated, are durably constructed, and can be used to add a bit of core engagement/stability challenges to a workout. Please don't win yourself a Darwin award by trying to stand on one while squatting, but for lunges, pushups, and similar exercises, these work. That being said, I wouldn't call them a 'balance board', instead, these are basically two disc shaped thick walled balloons.