The Revolve360 Slim comes with a few soft goods components to help improve your child’s comfort and fit. 1) The optional infant insert can be used at any time in rearfacing mode but must be removed in forward-facing mode. 2) The optional seat protector pad, for use in extended rear-facing mode, is designed to simplify clean-up in your car seat without the need to remove the entire cover. When using in forward-facing mode, the optional seat protector pad must be removed once your child weighs more than 40 lbs.