Velcro Strap, 1" x 9"

You can get it at Amazon:
https://www.amazon.com/Elastic-Stretch-Storage-Extension-Organization/dp/B08VRQ9XYJ/ref=sr_1_4?crid=1SBX8E7ON04XI&keywords=elastic+hook+and+loop+straps+1%22+x+9%22&qid=1688076194&sprefix=elastic+hook+and+loop+straps+1+x+9+%2Caps%2C157&sr=8-4
 
This strap comes in a package of 10 from Amazon, and is great for attaching any of the mc_PuP Portable Mixers to a mic stand or body part.