The Antilop, along with all other IKEA products, is BPA free. BPA or Bisphenol A is a chemical that is used to make most plastics. It can seep into food or drinks stored in containers made with BPA. It is unsafe to be exposed to BPA, especially for children.
There is a huge space between your child and the tray which often leads to spillage and mess. There is a solution for this: buy the padded inflatable cushion, inflate it until your child is a comfortable distance from the tray.
You can fold and unfold it in less than 3 seconds. To unfold, just pull the arms apart and the chair's legs will pop open. To fold, pull the inch-wide strap at the back of the chair which pulls the legs back together.
The leg holes are too small (about 5 inches in diameter) and bigger babies with bigger legs cannot fit in them. What some parents did was turn the holes bigger by carefully cutting the fabric, still following the circle of the leg holes.
The back of the chair is too reclined, causing the child to slide down when seated. The material is also slippery, made from a tent-like material, making it difficult for a child to stay seated upright.