Like all Ergon products, the BX1 backpack was made with comfort and simplicity in mind. Unlike other traditional backpacks, the BX1 better distributes the load and keeps the weight close to the body to stabilize and minimize movement while riding. The BX1 also features automatic adjusting straps and Ergon’s Adaptive Carrier System to ensure the fit will be just right just all-day comfort. The automatic adjusting straps are made possible by two D rings at the top of the shoulder straps and the Adaptive Carrier System directly connects the two shoulder straps to the load-bearing bottom of the bag for some structural support underneath the load. To further the comfort, Ergon chose a well ventilated contact padding which promotes air flow to keep your back cool and dry. Aside from outstanding comfort, the BX1 features a well thought out layout offering a 7 Liter load capacity and room for your Camelback reservoir, phone and wallet.
With 427 cubic inches of storage, the 2013 BX1 is the smaller of Ergon's cross-country-focused backpacks, and is intended for weight-conscious riders wishing to carry only necessities. All of Ergon's BX series of packs use the innovative Adaptive Carrier System where the shoulder straps are connected to a hammock-like structure.
This design cradles the load, and allows it to be brought as close as possible to the user, ensuring more stability than traditional backpacks. The load, however, does not sit against your back as the BX1 uses an internal aluminum bar between the lower pads. Also, the bar can be adjusted by bending it slightly for a custom horizontal fit.
The cushioning pads are specially designed with ventilation in mind by using a large open weave that allows air to flow. Additionally, the pads are laid out to create channels, which permits fast drying to prevent irritation and discomfort. Furthering that goal, the BX1's shoulder straps are self-correcting, via D rings at the top, to automatically find the ideal angle and ensure a comfortable fit. There are two shoulder strap sizes available, small and large, for optimal fit and weight distribution. This attention to detail isn't limited to the BX1's external design -- just as much thought has been placed on actual storage.
The BX1 is designed to support heavier loads inside of the 'hammock' where its mass is centralized for stability. There's a large external pocket that's perfect for a rain shell, and inside there's a place for a pump, a multi-tool, and tire repair kits. The hip belt also has a mesh pocket for a phone, camera, or keys, and the external shock cord allows quick access to another layer.
The BX1 does not come with a bladder, but it has a compartment and routing for one. The compartment is a large zipped opening for ease of use and can hold either the Ergon BH200 or BH300 bladder. The 2013 Ergon BX1 comes in two colors; Black or Green/Grey. The Small pack is intended for riders under five foot seven; the Large is for those taller than that.