Aeman Elastic Stretching Strap with Loops - Stretching Out Yoga Strap - Exercise Straps for Athletes, Physical Therapy, Dancer, Pilates, Gym - Carrying Bag Included

My wife bought these to help my daughter stretch to get better with cheer and tumbling. These have definitely helped her get better. They seem to help with her holding a stretch position rather than pushing her a ton. That's helpful because she will use them while playing the iPad or watching TV which means she stretches more. That's most likely the reason they helped so much.