So, what can you bring into the park? Small clutch bags are okay, as long as they're not too big - we're talking 5x7 inches or smaller. You can also tote in a one-gallon ziplock bag, because who doesn't love a good ziplock?
Now, about what's not allowed: backpacks, luggage, and coolers are all no-gos. Don't even think about trying to sneak in a large purse - the park staff will be all over that like a hawkeye!
But here's the thing: the bag policy is actually pretty lenient compared to some other stadiums. You can still bring in food and drinks, as long as they're in a clear container. Just don't try to sneak in any outside alcohol - that's just not going to fly!
Capital One Arena Bag Policy: Allowed and Prohibited Items - SeatGraph