For warmth, down is hard to beat. But many insulated pieces have two drawbacks: water-resistance and packability. Not so with the Cho Oyu. It's an ultralight piece with a DWR treatment that makes the shell and the down exceptionally moisture resistant, so it holds warmth in damp conditions. When space in your alpine rig is at a premium, it can be compacted and stuffed into its integrated stow pocket.
- Face fabric is Pertex Quantum nylon with a DWR finish to make it water-resistant and down-proof.
- Nylon lining.
- Insulated with 750 fill-power European down, treated with Downtek so it's anti-bacterial and moisture resistant.
- Box baffle construction keeps the down evenly distributed.
- Helmet compatible hood adjusts with one hand.
- Elastic wrist cuffs.
- External chest pocket doubles as a stuff sack.
- Drawcord adjustable hem.
- Reflective details.
|Insulation||750 fill power water-repellent (DWR) goose down|
Waterproof garments use waterproof-breathable technologies and are fully seam-taped. Water-resistant garments use waterproof-breathable technologies but their seams are not taped. Water-resistant garments repel water and protect against wind but are not made of waterproof fabric.
|Pockets||1 external chest|
A windproof garment does not allow any air to permeate the fabric. A garment with windproof panels has panels of fabric that are totally windproof, but the rest of the garment may not be windproof. A wind-resistant garment resists some wind, but not as much as a garment that is windproof.
Durable water repellency
Usually referred to as DWR. A treatment made to fabrics that causes water to bead and run off instead of soaking through.