The Bach Molecule 45 is a 45-litre hiking backpack designed for day trips or multi-day outings where you need a reliable carry solution. Part of Bach’s line of men’s trekking packs, it offers enough room for your essentials without overloading you on the trail.
The pack’s streamlined shape (71 x 42 x 13 cm) keeps your load close to your back, which can help when you’re navigating narrow paths or dense undergrowth. With three torso-length options—54, 60 and 67 cm—you can tailor the fit to your frame. Internal compartments and pockets let you organise gear so that items are easy to reach when you need them.
Coming in at just 1.11 kg for the small, 1.19 kg for the regular and 1.27 kg for the large, the Molecule 45 sits firmly in the ultralight category. That lighter pack weight means less effort on steep climbs and longer days on the trail. Choosing the right torso length also helps distribute that load evenly, reducing strain on shoulders and hips.