Can be used from the time they start crawling, This helmet protects their head during the wobbly stage of pulling themselves up. It was used for a short period as they stopped using it soon after, Less than 2 months. Washed. Will be folded and packaged as it was upon purchase. A linen baby helmet with 2.5cm thickness to absorb impact. - Color: Yellow - Thickness: 2.5cm - Material: Linen, Urethane - Washing Method: Hand wash - Design: Cross design Thank you for looking.