I've been on ambulatory oxygen for years but am lucky enough to still be pretty mobile. You are issued a strong carry bag for your oxygen but I struggle to carry the hefty weight of full cylinders for any length of time. I am thrilled with this trolley, it is robust but not at all heavy. I have taken it shopping and simply put it into the shopping trolley whilst in a supermarket. If you are just out for a walk you hardly know you are pulling it behind you, it has a super non-slip handle, smooth wheels and is just so much easier. Anyone using these standard cylinders will know how unsteady they are and how they can topple over with the slightest knock, usually straight onto your foot! That will never be a problem again and I would recommend this to anyone, especially those who are new to having to carry oxygen, make your life a bit easier and treat yourself to a trolly, you will be very happy you did!