Doorjam Strap.

Doorjam Strap.
Made of Nylon webbing.
An inexpensive alternative to the Assist Strap.
Use as a doorjam stopper to anchor Fit-Lastic Therapy Bands or Fit-Lastic Therapy Tubing.
Available in a 12-pack ($7.80) or an economical 72-pack ($39.60).