I didn't read the full description before perchance and didn't realize how much went into installing these. I was still able to get them on with my boyfriend's help but it was quite a process. They've held up well so far, have had them on for a few months though a very hot summer.Overall, the product did what it was suppose to do.The ones that come with the strap will break. I replaced 6 straps and 4 have already broken. (One week)It is easy to work with but wish it stretched and shrunk a little more. It is very hard to get a tight fit, but can be done. Make sure to wear gloves when working with the hot material.Great!Bought four rolls to replace straps on a very expensive pool chaise lounge. Each roll was 19’ or less. Not the advertised 20’ roll. Not a good business practice for the seller or Amazon. Most people probably wouldn’t even notice this especially if they were just replacing a strap or two. I had carefully calculated the amount I needed and when I was short this is when I noticed that the rolls were shorter than advertised.After watching a few youtube videos we decided to repair our patio pit group rather than replace after a years or service. First attempt was difficult but by the third time it was getting easy. The videos recommended subtracting 10% from the measured length but I found removing even more made the span tighter. My measured length was 35 inches, my first piece was cut 31.5 inches and the remaining pieces were cut 30 inches. My I was able to repair one and a half chairs from my first roll and have ordered two more rolls to finish the set.Was not to hard to do at all it is that you must cut the straps to the right size. but got it right off the bat.After cutting them to the size needed you got to put them in a pot of almost boiling water and keep them at that temp for about 5 min then remove them and get them wrapped as fast as you can before they get hard , it is very easy to do and you do have time. all and all great deal i give it 5 stars. AAA+++Transport Parfait, plus rapide que prévu. Produit ParfaitOnly 19' received rather than the 20' advertised.That's bad enough but means going to be a gaping holein one lawn chair.Incredibly difficult to install.To save time later - told you so!The instructions were very clear and it was an easy product to use. The only negative I would say is the provided plugs are a bit flimsy.chaise exterieur