The MT900 UL 50+10L is the men's counterpart to the women's ultralight model and delivers the best weight-to-volume ratio in this entire group of packs — 1,300 g for 60 liters (50L base plus 10L extension) works out to just 21.7 g per liter. Its classification as an ultralight pack, with thru-hiking explicitly listed, confirms the focus on a lower base weight.
An internal frame and tensioned AIR mesh back panel keep the load close to the body while maintaining airflow, and the 100D Ripstop polyamide fabric with reinforced 210D RS bottom addresses the most stressed part of the pack — ground contact when set down — without adding weight across the whole body of the pack.
The pack is hydration-bladder compatible, has an integrated rain cover, and a padded hip belt with pockets — the same standard feature set as the heavier models in the range, just in a lighter build. The 10-year warranty applies here as well. Suited to hikers aiming for a lower base weight who still don't want to give up back comfort on multi-day routes.