We’ve been using Alpkit’s bar-mounted bags for long rides and multi-day adventures since they first appeared. The latest, more minimal, version does away with the previous outer stretchy mesh pocket and is squared off at the base. Trimmable Velcro straps paired with a sewn-in webbing ladder give a choice of mounting options.
The fabric is tough and durable, and sheds water and dirt with ease. It’s not totally waterproof, due to the elasticated drawcord opening, but this does allow one-handed access (a roll-top version is available for $45). There’s space for a 500ml water bottle, or a phone, camera and several handfuls of trail mix.
Price $42