A Cricket Bat made from English Willow, especially in a size 3, is typically designed for junior players aged around 8 to 11 years old. Here are the features you might expect for such a bat along with a bag:

1. English Willow: English Willow is a premium wood used in cricket bats due to its excellent strength, flexibility, and responsiveness. It provides good power and a nice feel when striking the ball.
2. Size 3: Size 3 bats are smaller and lighter, suitable for junior players. They usually have shorter blade lengths and thinner handles to accommodate smaller hands and ensure proper stroke mechanics for young players.
3. Weight: The weight of a size 3 bat is typically lighter compared to adult bats, making it easier for junior players to handle and swing effectively. It’s usually in the range of 1 lb 10 oz to 2 lb 2 oz (737 grams to 964 grams).
4. Handle: The handle of the bat is designed to provide a comfortable grip for junior players. It may have a thinner diameter compared to adult bats to suit smaller hands.
5. Profile: The bat’s profile is likely to be designed for a balance between power and control, considering the strength and technique of junior players. It may have a slightly lower sweet spot to help young players develop correct batting techniques.
6. Bat Cover/Bag: The bat might come with a protective cover or bag to keep it safe from damage when not in use. This cover can also make it easier for the junior player to carry the bat to and from matches and practice sessions.
7. Quality: While still maintaining high-quality English Willow, size 3 bats might not be top-of-the-line professional-grade bats. However, they are constructed to offer durability and performance suitable for young players learning the game.
8. Stickers and Branding: The bat may feature branding and stickers from the manufacturer, often reflecting the design and branding of professional cricket bats.

These features collectively ensure that the bat is suitable for junior players in terms of size, weight, and performance while also providing necessary protection and ease of transportation with the included bag.