Review text:
Great product for my mother with 24/7 oxygen! My mother has been using these oxygen glasses for over a year now. She alternates between 1 with straight and 1 with curved ends. She prefers the straight ones over the ones with curved ends because of the flat part at the bottom, which makes it easier to position when putting them in. The product information states that they last about 1 year. The one with curved tips has now, after 14 months of use (actually only 7 months because they are used alternately), torn next to the attachment of the tips. I clean them once every 3 weeks and then boil them in the microwave in the special bags for 90 seconds at 1100 watts. A big disadvantage I find is that they are almost impossible to get dry on the inside. Even after hanging them out for a week, whether or not above a radiator, they are sometimes still not dry.