Ergobaby ★ Baby carrier accessories Baby waist belt only for fall prevention 24 months (12.2kg) Thank you for viewing. This Ergobaby baby carrier accessory, the baby waist belt, is an item used to prevent falls for babies up to 24 months old (12.2kg). It has only been tried on and has been stored with care. Would you like to have it if you need it for safety and peace of mind?