Detachable Daypack-Rigged Backpacks

Gregory's 'Tetrad 75' is a consummate travel backpack with an array of design features aimed at helping you navigate the most unpredictable, dynamic and dirty elements of adventuring. The 'Tetrad 75' is nominally a 75-liter pack, but this volume includes a 20-liter backpack that can be detached via a straightforward zipper. This means that you can quickly and easily throw things in a daypack for a hike, a trip to the beach or a wander through a local bazaar whilst leaving your primary backpack in your hotel or hostel room. When it's time to get on the move again, you can simply re-attach the daypack to the mothership to keep all your belongings together.

On the topic of being on the move, while the main backpack offers 55 liters of volume, it's certainly possible to stash it in the overhead compartment as carry-on luggage on some airlines, though this may depend on the specific aircraft as well as the mood and disposition of airport staff and airline stewards on a given day. What's beyond question is that the 20-liter daypack is small enough to stuff under the seat in front of you. The daypack itself offers thoughtful features such as a laptop sleeve that's mounted above floor level so that it's cushioned from drops and rough handling.

Comfort is also of paramount importance when you're hauling around up to 75 liters of gear, which is why the 'Tetrad 75' features an adjustable torso with wishbone alloy frame suspension. This allows you to customize the fit to any torso length between 16 and 21 inches. The process of adjusting the torso length is mind-numbingly simple, and the improvement in comfort levels and your ability to carry your load around is stark. Further comfort arrives courtesy padded shoulder straps with ventilation holes that promote airflow and mitigate sweating. The back panel, meanwhile, is also perforated and breathable, so you don't get to your destination with a nasty backpack-shaped sweat mark across your back. Elsewhere, the 'Tetrad 75' also boasts Gregory's famous ActiveShield compartment, effectively a waterproof chamber that's designed to help you separate your soiled, dirty and stinky worn clothes and shoes from the rest of your gear, out of sight and out of mind until you get some place where you can run a laundry load.

By blending the flexibility of the detached daypack with the unreal comfort offered by the adjustable torso and breathable back panel and the dirty laundry-segregating functionality of the ActiveShield compartment, Gregory has managed to achieve a travel backpack that ticks every conceivable box.