Extra weight in your workouts means extra explosion on game day. Adds 4.5 pounds to your workout in areas that don’t affect your joints. Weight focuses on your hamstrings, thighs, and glutes, working on posture, explosiveness, and strength. Hydro gel inserts can be heated or cooled for use during a workout or for post-workout recovery. Includes extra set of gel inserts. Uses a belt-like system to stay intact, and can be worn as compression or outerwear. Moisture-wicking fabric keeps your skin dry and comfortable. Anti-odor technology keeps your gear fresher, longer.