This high chair attaches to your choice of dining room style chair. It has multiple straps to secure it to the chair as well as straps and a slide-on, adjustable tray. I believe the tray is dishwasher safe. The seat also adjusts so you can lean baby back or sit them upright. Seat cover is removable and washing machine safe. Absolutely loved this seat! Will deliver to anywhere in Moscow or Pullman free if you're flexible about delivery date. $20 obo.