First off, these are monthly lenses. They should be taken out nightly & thrown away after 30 days use (not sure if the other reviewer was saying each lens didn’t last 6 months or they had to change them more often than monthly, but if the former then they clearly didn’t know how to use their lenses). Since I only wear my contacts *maybe* a few times a month, my year supply lasted me 4yrs. Doing this did cause them to become over hydrated in the solution, but regardless I was very pleased with the nearly 10yrs I was a biofinity user. However they haven’t changed much in that time & there are definitely better options out there now, particularly for someone like me who is a sporadic contact wearer and only wears a lens in one eye (due to a jacked up astigmatism in my other eye). I never had a problem with them tearing unless I tried to stretch the use of a single lens a bit too long, but they definitely let you know by how they feel if they’re revolting and need to be changed. Honestly I would’ve stayed with biofinity had my dr not recommended a newer daily lens that was more appropriate for my occasional contact wearing.