Prana - Woolybird 1/2 Zip Standard Fit. Color Stormy Night Heather. On sale for $97.61. MSRP $155.00.. Add to favorites. 0 people have favorited this+2Brand NamePranaProduct NameWoolybird 1/2 Zip Standard FitGenderMen'sColorStormy Night HeatherPrice$97.61MSRP: $155.00Rating