Pump up the volume with the Adult Sweat It Out Costume. Styled after classic retro fitness gear, it is fun and breathable. Ideal for 80s workouts, gym themes, and Halloween parties. Sweat out the stress and party in style!. Exuberant and energetic, Richard Simmons has graced the world with his unique personality and passion for health and wellness. Our "Sweat it Out" costume includes everything you need to embody America's favorite fitness personality.