Next-generation materials meet classic design The Fab Aluula brings cutting-edge materials to a classic design. Built with ALUULA – a new class of composite materials with eight times the strength-to-weight ratio of steel yet lighter than nylon, polyester, or aramid – it's a smaller, refined version of the Trail Bum Bummer pack. The back is slightly shorter with a curved bottom, giving a more compact profile whilst maintaining the trail-tested roll-top design. ALUULA uses a patented fusion process that bonds materials at the molecular level without heavy glues, creating composites that are genuinely among the lightest and strongest currently available. The translucent white colourway shows off the material's unique construction. At a maximum capacity of 30 litres, it's sized for people who're comfortable with ultralight packing and want minimum weight without compromising durability. This is materials science applied to backpacking – the kind of pack that makes you reconsider what's possible. FEATURES SPECS THE BRAND ALUULA composite construction for exceptional strength-to-weight High-density polyethylene waterproof material Molecular-level bonding without heavy adhesives, tapes or stitched seams 30L max capacity – refined version of classic Bummer Roll-top closure maintains Trail Bum design language 5cm shorter back with curved bottom for compact profile Translucent White colourway showcases material Crafted with ALUULA: ultra-light, water-resistant, durable fabric Capacity: 30L Weight: 385g If you’re the kind of hiker who measures pack weight in grams rather than kilos, who knows their base weight down to the last stuff sack, and who's figured out that carrying less means walking further, Trail Bum is built for you. Created by Japanese ultralight pioneer Tomoya Tsuchiya – owner of cult Tokyo outdoor store Hiker's Depot – this is his backpacking philosophy distilled into packs that strip away everything unnecessary. The brand name says it all: these are bags for people who'd rather spend time on the trail than living in the city, designed with the streamlined simplicity that reflects that lifestyle. No excess features, no unnecessary weight, just functional gear that lets you focus on the path ahead. Tsuchiya introduced ultralight hiking in Japan when it was still considered radical, opening his store in 2008 and championing the idea that reducing your load isn't about being lightly equipped – it's about distilling kit down to essentials through cutting-edge design. Every Trail Bum pack embodies that philosophy, built from advanced composite materials like ALUULA, Spectra fibre and Ultra 200X that offer exceptional strength-to-weight ratios. Whether you're planning mega thru-hikes, wild camping getaways, or just reconsidering how much you actually need to carry, Trail Bum represents the evolution of what a backpack can be when you stop adding features and instead start asking what you can take away.
