Yes, mini backpacks—specifically the popular Loungefly variety—are not only allowed but are a high-fidelity fashion staple at Disneyland and California Adventure in 2026. Disney's official bag policy permits any backpack, purse, or cooler as long as it does not exceed the dimensions of 24 inches long x 15 inches wide x 18 inches high (61 cm×38 cm×46 cm). Because mini backpacks are well within these limits, they are perfect for navigating the parks. A high-fidelity "pro-tip" is that these smaller bags fit easily into the mesh storage pouches or at your feet on almost every attraction, including high-speed coasters. Just remember that all bags are subject to a high-fidelity security screening, which includes a physical inspection and often a walk-through metal detector or X-ray scan. Using a mini backpack is a high-fidelity strategy for staying organized while keeping your hands free for those essential churros and "MagicBand+" interactions throughout the day.