Initial Use: Before first wear, ensure all zippers are working smoothly and adjustments (cuffs, waist) are understood. No special setup is required. Compatibility: This jacket is designed for children aged 9-10 years. It's suitable for layering over standard clothing like t-shirts, fleeces, or sweaters, depending on the temperature. The unisex design ensures it's appropriate for all children. Care Instructions: 1. Washing: Close all zippers and fasteners before washing. Machine wash cold (30°C) with a mild, non-biological detergent. Avoid fabric softeners as they can impair the waterproof finish. 2. Drying: Tumble dry on low heat or hang dry away from direct heat. Do not iron or dry clean. 3. Waterproofing Maintenance: Over time, the DWR (Durable Water Repellent) finish may wear off. If water starts to soak into the outer fabric rather than bead off, consider reapplying a suitable DWR treatment, available as a spray or wash-in product. 4. Storage: Store in a cool, dry place. Ensure the jacket is completely dry before storing to prevent mildew.