Prana - Woolybird 1/2 Zip Standard Fit. Color Stormy Night Heather. On sale for $96.06. MSRP $155.00.. Add to favorites. 0 people have favorited thisBrand NamePranaProduct NameWoolybird 1/2 Zip Standard FitGenderMen'sColorStormy Night HeatherPrice$96.06MSRP: $155.00