This cart was very easy to assemble, even came with a wrench to tight the locking nuts. The bag is easily removed with the multiple Velcro tabs. It won’t sag as there are plenty of tabs.  It is very attractive.  I got this for laundry but the more I look at it I think I may store my abundance of yarn in it. It’s nice and deep and will hold a lot  of laundry or yarn.