Fits ages 3-5 This jacket has been mainly used during snow trips in California. It's in excellent condition and provides great warmth and comfort while also being breathable, so it won't be too hot indoors. The Patagonia jacket is size 4T and fits toddlers aged 3 to 5 years. It was minimally used, and is perfect for keeping your child cozy. This is a great opportunity to get a high-quality Patagonia jacket at a great price.