Serious mountain bikers, this Ergon BA3 backpack is built for your adventures! With 17 liters of smart storage and included back protection, it's designed specifically for Enduro and All-Mountain riding where you need both gear capacity and safety. The revolutionary 4-step adjustable carrying system lets you customize the fit between sizes S through XL, while the Adaptive Carrier System compresses the load and uses a flexible aluminum profile to match your body's anatomy perfectly. The hip straps are adjustable too, so everything stays secure no matter how technical the trail gets. Organization is brilliant - there's a main compartment with four inner pockets, separate bladder compartment (bladder not included), front pocket with dedicated tool and pump space, and even a waist bag for quick-access items. The back protector compartment is ready for the BP100 protector (which is included!) and there's space for a hydration bladder too. Weighing about 1060g, it's lightweight enough for long rides but tough enough to handle whatever you throw at it. The ventilation keeps you comfortable, and the thoughtful pocket layout means your essentials are always accessible. Whether you're hitting bike parks, backcountry trails, or all-day adventures, this backpack delivers the protection, comfort, and organization that serious riders demand. It's one of those pieces of gear that just makes every ride better and safer!