Blue and Grey patterned Cardigan.

 A cozy and cheerful cardigan. The soft blue and grey tones would complement his playful and energetic nature, while the solid blue ribbed cuffs and hem that ensure the cardigan fits snugly, keeping your child warm without being too tight. The round, light blue buttons running down the front would add a touch of fun, making it easy to dress and adding some playful charm.

The size and fit give the cardigan a relaxed, comfy look, perfect for both indoor and outdoor activities. Whether he's wearing it with a pair of jeans or casual pants, it would make a lovely addition to his wardrobe, offering warmth and style for cooler days. The combination of vibrant blue and neutral grey makes it versatile enough to be paired with various outfits, creating a balanced, fun look suitable for any casual outing or playtime!

Add the hat for extra warm and style.