I have provided STEP, STL 3MF and the Fusion 360 file, which includes parameters for ring size, thickness, height, and fillet.
This ring is suitable for use with any yoga mat, gym mat, or foam roller.
All of my functional 3D models are available on Thangs.com
https://thangs.com/designer/PILED
Visit https://piledltd.co.uk/ for more
The author marked this model as their own original creation.