Definitely nice and sturdy.  Don't have concerns about durability.  Only 2 issues and they are minor.  1... The chairs are probably a little narrower than I'd like.  When laying down there really isn't room to put your arms on the chair.  If you are wanting to rest your arms you should get the other chairs with the armrests.  But if your space is limited and you don't mind having your arms rest in your lap these chairs would be the better choice.  The other minor issue is the prop on the back fits a little too tightly between the back legs.  It may be challenging to adjust the height of the chair without actually getting out of the chair since it is such a tight fit between the legs.