APIDURA Backcountry Saddle Pack 4.5L

The APIDURA Backcountry Saddle Pack 4.5L is designed for mountain biking, bikepacking, and off-road riding, particularly for bikes with limited clearance between the saddle and the rear wheel. Its 4.5-liter volume is suitable for carrying light, compressible gear. Its shape is optimized to maintain clearance above the rear wheel and allows for use with a dropper post when paired with the Dropper Post Adapter.

The construction combines Hexalon—a lightweight, waterproof laminate made of TPU, nylon, and PU—with 840D textured nylon panels placed in high-wear areas. These reinforcements improve resistance to abrasion, tearing, and punctures. Radio-frequency welded seams create a waterproof construction suited to the conditions encountered on the trails.

The three-point anti-sway system includes a reinforced Hypalon Velcro strap around the seatpost and two reinforced straps with buckles attached to the saddle rails. A lightweight integrated structure helps stabilize the pack on rough terrain. The roll-top closure allows the volume to be adjusted to the load, and the air-release valve facilitates compression of the pack.

An external bungee cord allows for attaching extra items while keeping them quickly accessible. Reflective elements and a mounting point for a rear light complete the features.

Specifications

• Use: Mountain biking, bikepacking, and off-road riding.

• Volume: 4.5 L.

• Compatible with dropper posts using the Dropper Post Adapter.

• Shape optimized for bikes with limited clearance above the rear wheel.

• Main material: Hexalon in TPU, nylon, and PU.

• PFAS and PFC-free materials.

• Reinforced 840D textured nylon panels.

• Enhanced resistance to abrasion, tearing, and punctures.

• Waterproof construction with radio-frequency welded seams.

• Main compartment.

• External bungee cord.

• Roll-top closure with quick-release buckles.

• Air-release valve for easier compression.

• Three-point anti-sway system.

• One reinforced Hypalon Velcro strap for the seatpost.

• Two reinforced straps with buckles for the saddle rails.

• Lightweight integrated structure.

• Reflective elements.

• Mounting point for a rear light.