What Our Gearhead® Experts Are Saying:“I take this pack on bigger days when I still want a vest-style fit but need more room. It carries surprisingly well while skinning, and the ski lasso system makes transitions way faster when things get steep or exposed.”Longer ski mountaineering days demand a pack that can keep pace from the first skin track to the final descent. When we’re stacking vert or linking technical lines, the Firn 28L Backpack from Osprey stays composed through every transition. It hugs the body on the climb, never feels cumbersome while scrambling, and stays balanced once skis are back on.This pack expands on a speed-focused design with added capacity for extra layers, rope, and alpine tools. A vest-fit harness distributes weight evenly for comfort during sustained climbs, while the snow-shedding backpanel resists buildup in changing conditions. The ambidextrous ski lasso allows skis to be stowed without removing the pack, and on-body access pockets keep skins or crampons within reach. Purpose-built features like dual axe attachments, reinforced ski loops, and a detachable helmet net make this pack a reliable partner for committing ski-mo objectives.
Responsible Collection: Bluesign APPROVED, Recycled/Repurposed;
Material: [face fabric] 100% recycled 210D nylon, NanoTough DWR treatment, [lining] 100% recycled 70D nylon, PFAS-free DWR treatment, [bottom panel] 100% recycled 210D nylon, PFAS-free DWR treatment;
Volume: [small/medium] 28L (1709 cu in), [medium/large] 30L (1831cu in);
Support/Suspension: HDPE framesheet, Atilon/EVA foam backpanel;
Shoulder Straps: vest-style, padded, adjustable;
Waist Belt: adjustable, padded;
Access: side, back;
Pockets: 1 hipbelt, front avalanche tool pocket, phone/GPS zippered chest pocket, 2 stretch chest pockets, side zippered crampon pocket main top opening ;
Gear Loops: rope strap, hipbelt loop;
Ski Carry: Ski Lasso carry system;
Snowboard Carry: no;
Helmet Carry: deployable helmet net;
Ice Axe Carry: dual;
Dimensions: [small/medium) 21.7 x 11.4 x 10.6in, [medium/large] 22.8 x 11.4 x 10.6in;
Claimed Weight: [small/medium] 2lb 7.04oz, [medium/large] 2lb 9.28oz;
Activity: ski mountaineering;
Manufacturer Warranty: lifetime;
storecredits: 0.0;
Style Variants
Available Colors: Elderberry Purple/Peppermint Green
Size Reference for Osprey Firn 28L Backpack
Available Sizes: S/M, M/L
