The Men’s Mammut Meron IN Hooded Down Jacket gives a lot of warmth and little weight so you can take it to high altitudes for mountaineering missions and trekking trips. It boasts one of the the highest fill ratings around for an incredible loft that warms you up without weighing you down. 900-fill down is so lofty that the jacket compresses into its own pocket for compact packing. Complementing the ultralight insulation, the jacket’s ripstop shell is also lightweight and ruggedly resistant against light moisture ranging like snowflakes and spray. The lining is so light that it’s semi-transparent, so you can see the down inside.