The first one lasted approx 8 months before the strap that connected to the heel of the shoe came unglued. The only problem I have it that when it is folded up the bike stand somewhat blocks the license plate but Ill just remove when folded. Material quality: Pass the QC (quality Control) so 5 star for that. It fits Im my wardrobe perfectly and is really easy to set up. This keyboard is HOT SWAPPABLE, meaning you can easily change out the switches and keycaps which is a huge plus if I ever decide to customize it later. Hasta el color! Returned as size ran very large. They were very snug initially but they have lost most of the elasticity and are now very loose. Some people say they leak noise around, but Ive not noticed this at all. Update 2/28/2021My daughter loves them too much that wearing around the house as house shoes wear an tear happens.