SPECIAL CHEST EXPANDER

This is the SPECIAL CHEST EXPANDER by Keyston.
It is a spring-resistance exercise device primarily targeting the pectoral muscles, shoulders, and back muscles.
It is used for upper body strength training and also helps improve posture.
By gripping the handles and spreading or closing your arms, you can train multiple muscle groups.
The product in the image appears to be a vintage collector's item in a retro box.

Found while clearing out my grandfather's house.
It is quite old.
It seems to be usable, but please purchase it as a Showa retro antique.
The box has tears and damage.
Please see the photos for details. Feel free to ask any questions.
#Expander #ShowaRetro #Vintage