Tighten, tone, trim or build your Booty at home or in the gym with Booty Builder Bands. Easy to use, you can take with you anywhere for your daily 10 minute Booty Blast. Get workout tips from Sandra in this video. Use in conjunction with the Booty Builder machine at the gym for added gains. See video. Use the rubber bands to add extra weight when exercising on the Booty Builder. Add the bands to the weight stack, as explained by Bret Contreras in this video.