LED Bicycle Backpack with Speakers and Expandable Helmet Storage

This music backpack features built-in LED lights and integrated speakers, making it ideal for outdoor activities. It has expandable helmet storage, increasing from 14.8 liters to 25.2 liters, providing ample space for gear. The backpack includes a dedicated compartment for a 15-16 inch laptop and a separate section for a 19-inch knight pro. Please note, the battery is not included.