Dd3 is just 4 and still in her baby car seat with 5-point harness. Just want to know really at what point do I put her in a HBB? Really can't remember what I did with my older 2. Also, she sometimes takes her arms out of the side bits when she's in a strop lol so I'm wondering if she'd be safer in a HBB...?
She's quite petite but her head is right at the top now. I'm not sure what she weighs (but could just weigh her at home). What's the minimum weight for a HBB?