I have purchased a purple kink resistant tubing that doesn’t twist up as badly however the downside is, it will pull off of the concentrator more easily. It isn’t as snug which seems strange.
Also there is a hose that is called Tidy Tubing Self Retracting that comes in 15’. I haven’t tried it, I think it would take at least 2 connected and you would still be on a “short leash”. But l am always looking for a better hose!
One thing I have found, is using a 2’ cannula keeps the connector from getting stuck under furniture and stopping me dead on my tracks!
Best luck in finding supplies that are easy to work with. Becky (moderator)