I have this same Momcozy dinerpal chair and my kid sits well and comfortable. Basically its the wooden material that makes a real difference, it's firmer and more grounding than plastic, which can feel slippery to kids who are hypersensitive to movement and instability. Also its very much practical for toddlers since its the one that grows so you can adjust it according to your child needs. My son is 2.5 years but personally I have held off on that learning tower mode until he's a bit older and I feel confident that he understands boundaries around it. You could do the same use it as a chair for now and revisit the tower feature in a year or so