Karrimor Sierra Waterproof Jacket - Green

A 10,000mm waterproof rating means the fabric can withstand a 10,000mm column of water over 24 hours before water begins to seep through. This indicates a high level of waterproofing, suitable for heavy rain and various wet weather conditions encountered during outdoor activities.

While highly waterproof, the Karrimor Sierra Jacket is made from a lightweight polyester and is primarily an outer shell, not designed for insulation. For very cold winter conditions, you would need to layer it over appropriate thermal base and mid-layers for warmth.

Yes, you can machine wash this jacket. However, it's crucial to use a cold (30°C) gentle cycle and avoid harsh detergents, bleach, or fabric softeners, as these can damage the DWR treatment and the waterproof membrane. Using a technical wash for outdoor gear is recommended.

DWR stands for Durable Water Repellent. It's a coating applied to the outer fabric of waterproof jackets that causes water to bead up and roll off, rather than soaking into the fabric. This prevents the fabric from becoming saturated ('wetting out'), which helps maintain the jacket's breathability and waterproof performance.

The frequency depends on how often you use and wash the jacket. If you notice the fabric is starting to absorb water instead of repelling it, it's a good indicator that the DWR needs to be reactivated (e.g., via tumble drying on low heat if allowed) or reapplied with a new DWR product. This could range from a few months to once a year.

The jacket's fabric is waterproof, and the pockets are secured with zips. While highly water-resistant, it's always best practice to use waterproof bags or cases for electronics and highly sensitive items if exposed to prolonged or extreme wet conditions, as zippers can sometimes allow minimal moisture penetration.

This often indicates that the Durable Water Repellent (DWR) treatment needs reactivation or reapplication. First, wash the jacket according to the care instructions (using a technical wash if possible). Then, either tumble dry on low heat to reactivate existing DWR (if care label permits) or apply a new DWR spray or wash-in treatment.

Ensure you are not overheating and that your inner layers are breathable. The jacket's mesh lining is designed for breathability, but if your base layers are not wicking moisture away, condensation can still build up. Try adjusting your layers or unzipping the jacket slightly for increased ventilation if conditions allow.

The zipper may have dirt or debris caught in it, or it might need lubrication. Clean the zipper teeth with a small brush and mild soap, then rinse thoroughly. If it's still stiff, apply a specialized zipper lubricant or a small amount of silicone spray to the teeth.