Review title is Kinky tubing [SEP] This is to replace the junk tubing my O2 company provides to me.  Their tubing is thin, kinks and cracks after a few months, cutting off O2 delivery.  I was hoping to find tubing that lasted longer and didn't kink.  This tubing kinked and coiled after only 2 weeks of use.  I don't know if there is a better product of this type available, I'll keep searching.  But this tubing isn't patient friendly and I'll not reorder.