Helly Hansen Koster Rain Jacket - Yellow - M

The Koster Rain Jacket is designed for waterproof and breathable protection in changeable spring and summer weather. While it can be layered over warmer clothing, it does not provide insulation on its own and may not be sufficient for very cold conditions.

Machine wash on a gentle cycle with cold water using a liquid detergent suitable for outdoor gear. Rinse thoroughly and tumble dry on low heat or hang dry. Avoid fabric softeners and bleach.

Helly Tech® Performance is Helly Hansen's proprietary technology that ensures a jacket is both waterproof and breathable. It protects you from the elements while allowing moisture vapor from your body to escape.

Yes, the jacket's lightweight, breathable, and waterproof features make it ideal for outdoor activities like hiking, cycling, and general everyday wear in wet conditions.

The jacket features an adjustable hood, elastic cuffs, and an adjustable bottom hem. Use these adjustments to achieve a snug and comfortable fit that keeps out wind and rain.

If water no longer beads on the surface, the DWR treatment may need to be renewed. Clean the jacket and then apply a DWR spray or wash-in treatment according to the product instructions.

The DWR (Durable Water Repellent) treatment may need to be reapplied. Clean the jacket according to care instructions and then apply a suitable DWR spray or wash-in product, following the product's directions.

Ensure the jacket is clean. Dirt and oils can clog the breathable membrane. Wash the jacket using a technical wash and rinse thoroughly. Check that pit zips or vents (if present) are open.

Gently clean the zipper teeth with a soft brush and mild soap. Lubricate the zipper with a silicone-based zipper lubricant or even a graphite pencil lead.