We received the Mia booster seat for my daughter about a week ago. Very quick and easy to assemble (we left the back on for now, but its very easy to remove when the time comes). My daughter, almost 6, loves this seat! She said its more "comfy" than the Graco one we have, and she likes the cup holders. There are thick fabric elastic holders to keep drinks in place. Luckily we haven't had anything spill on the seat yet, but the fabric seems stain and water resistant. Its a smooth, wipable surface, rather than a textured surface. And lastly, the seat belt is easy to strap in b/c the seat is the perfect size for my car. Some boosters are a tad wider, which makes getting the seatbelt to buckle a task. I will definitely be buying another one for my son when he gets a little older!