So, what can you bring into Wrigley Field? You can bring in clear bags, like a clear plastic tote or a clear backpack. You can also bring in small clutch bags, like a wristlet or a small purse. But, if you have a large bag, like a duffel bag or a backpack, you might want to leave it at home or check it in.
Bag Policy At Wrigley Field at Martin Clark blog
If you're planning to bring in food or drinks, you can do that too! Just make sure they're in sealed containers and fit within the bag size limits. It's like packing a picnic lunch - you want to make sure everything is secure and safe to eat and drink.