M's Reversible Bivy Down Vest Size:XS Collar and side pockets are

Collar and side pockets are lined with moisture-wicking brushed polyester mesh

Steam releasing thigh vents and a handy right-thigh pocket are accessible under pack straps or harness

highly compressible down core-insulation for cold mountain pursuits

Our full-coverage soft shell uses your body's own temperature regulation system to constantly push moisture away from the skin through the outer layer

and stows in the corner of your pack when you don't

M's Reversible Bivy Down Vest Size:XS Collar and side pockets areWater resistant, reversible down vest that provides the perfect combination of warmth, functionality and durability.