Welcome to Bag Week 2018[1]. Every year your faithful friends at TechCrunch spend an entire week looking at bags. Why? Because bags — often ignored but full of our important electronics — are the outward representations of our techie styles, and we put far too little thought into where we keep our most prized possessions.

I’ve always been wary of modular, rail-based bag systems. They’ve always struck me as rather military and imposing, which I suppose is kind of the point. Even Mission Workshop, [2] whose other bags I have always enjoyed[3], put out one that seemed to me excessive. But they’ve tempered their style a bit and put out the Radian, a solid middle ground between their one-piece and modular systems.

The Radian[4] is clearly aimed at the choosy, pack-loving traveler who eschews roller bags for aesthetic — which describes me to a tee. Strictly rolltop bags (originating in cyclist and outdoors circles) end up feeling restrictive in where you can stow gear, and rollers are boxy and unrefined. So the Radian takes a bit from both, with the added ability to add bits and pieces according to your needs.

What it is: Adaptable, waterproof, well-designed and not attention-grabbing

What it isn’t: Simple or lightweight

The core pack is quite streamlined, with no protruding external pockets whatsoever. There’s the main compartment — 42 liters, if you’re curious — and a cleverly hidden laptop compartment between the main one and the back pads. Both are independently lined with waterproof material (in addition to the water-resistant outer layer) and the zippers are similarly sealed. There’s also a mesh pouch hidden like the laptop area that you can pop out or stow...

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