This jacket requires no complex setup; simply put it on over your child's clothing. For optimal comfort and warmth in varying temperatures, layer it over appropriate base and mid-layers. It is compatible with a wide range of outdoor activities such as hiking, cycling, school trips, and general play in wet conditions. Ensure the size 9-10 UK is appropriate for your child's measurements to guarantee full coverage and comfort. To care for your Regatta Stormbreak Waterproof Jacket: - Washing: Machine wash cold (30°C) with a mild detergent designed for waterproof clothing. Avoid fabric softeners as they can impair the DWR finish. - Drying: Line dry or tumble dry on a low setting. Do not iron. - Storage: Store in a cool, dry place. - Maintenance: Periodically re-apply a DWR treatment if you notice water no longer beads up on the fabric surface, following the product instructions for the treatment.