This simple proprioception tool helps your clients find neutral spine and connect to deep core muscles. A more elegant, easy-to-use, alternative to folding towels. Plus, no towels mean less laundry for you and a consistently sized support for your clients. Place under the low back for assistance in neutral, under the sacrum to assist in roll ups, or under the knees in quadruped. Use it on the mat, Reformer, or Trapeze Table. Soft, comfortable, easy to wipe clean, with a non-slip back. PVC, pthalate and chloride-free.