After a workout, I have back/hip pain and all the flexor exercises don't quite reach the target. These were recommended to me by a Physical Therapist and they are incredible! The balls are soft enough to not feel like rocks under your back, but hard enough to reach the deeper tissue. I use a yoga mat as my base, and then lie on top of the balls. The yoga mat offers another layer of bounce/give. I highly recommend them!
Rating:
[5 of 5 Stars!]