Aero Wedge Seat Bag Strap-on

The Aero Wedge is available in Micro/XS, Small/S, Medium/M, and Large/L; Micro is ~0.65L for basic spares, Small holds a tube/CO2/levers (~0.98L), Medium expands to ~1.5–1.7L for 2 tubes plus tools and a phone, and Large (around 2L) fits larger items like a jacket and gloves.

It uses nylon straps with a buckle/quick-release to secure to railed saddles and includes under-bag straps for stability; it works with setback seatposts and dropper posts, fits saddles as narrow as 145mm, and lists seatpost diameter compatibility of 27.2–34.9mm.

Constructed from 1200D/1000D polyester (Cordura/ripstop) with sturdy buckles, the bag is water-resistant and has covered zippers on most sizes for light wet conditions, though the Micro is not fully waterproof and zippers can snag when heavily loaded.

The Aero Wedge’s teardrop, aerodynamic shape is designed to reduce drag and is intended for road, mountain, and hybrid cycling; when mounted properly it minimizes leg interference, though some bounce may occur on rough terrain.