The Beta Light 45L is our answer to the ultralight backpacking revolution. Inspired by our athletes and utilizing a running-vest style suspension harness system from our distance running series packs, the Beta Light 45L is simply built for moving fast on overnight adventures in the backcountry. Whether you’re spending months on the PCT or making the most of a two-week trip, the Beta Light 45L carries all the essentials in a waterproof, sleek design that doesn’t sacrifice comfort.
Combining six decades of innovation with Black Diamond’s unique company culture of using and testing our products in the mountains. Our experience outdoors is what inspires and informs our engineering in the lab, and in turn the engineering leads to new gear and apparel that improve the mountain experience.
| Size | Torso Length | Waist Circumference |
|---|---|---|
| XS | 14 - 15.5 in 36 - 41 cm | 24 - 42 in 61 - 107 cm |
| S | 15.5 - 17.5 in 39 - 44 cm | 27 - 45 in 69 - 114 cm |
| M | 17.5 - 19.5 in 44 - 50 cm | 29 - 48 in 74 - 122 cm |
| L | 19.5 - 21.5 in 50 - 55 cm | 31 - 51 in 79 - 130 cm |
Measure between the iliac crest (the top of your hip bones) and the C7 vertebra (feel for the protruding bone at the base of your neck while looking down.)
Measure around your hips at the iliac crest (the top of your hip bones), not at your waist.
