They do not require a subscription they are available on amazon directly
https://www.amazon.com/Cold-Rush-Shldr-Large-Ossur/dp/B01N2TDMXR/ref=sr_1_5?crid=1FDOV748CFJK8&dchild=1&keywords=ossur+cold+rush+cold+therapy+system&qid=1617825908&sprefix=ossur...
