The BlackYak Kostroma Jacket is their most advanced waterproof, windproof and breathable jacket for mixed conditions, varied exertion levels, and stop-go activities.
The BLACKYAK Kostroma is the multi-use jacket for the 21st century. It features a shell constructed from GORE-TEX® INFINIUM™ for protection and a removable inner jacket constructed using Climashield® for insulation and YAK FLOW™ air permeable textiles.
13mm Taped Seams
CORDURA® Fibres For Superior Durability
HOOD AND NECK
Multi-point adjustable hood
Laminated hood brim
CUFF, ANKLE AND SLEEVE
Articulated sleeve for optimal range of movement
YAK HOOKS cuff adjusters
Ventilation pit zips
Die cut velcro
Elasticated Cord Lock
Two harness compatible HAND/chest pockets with zipper closure