Mammut Crag ML Jacket - Black - L

Its primary function is to serve as a versatile midlayer, providing an optimal balance of warmth and breathability for outdoor activities.

No, the Crag ML Jacket is not waterproof. It is designed as a midlayer and should be worn with a waterproof outer shell for protection against rain and snow.

The grid pattern in the fleece creates air pockets that trap warmth when needed, while also allowing air to circulate and excess heat to escape when your heart rate increases, thus regulating your core temperature.

The jacket is made from 100% recycled polyester and is dyed using a waterless dyeing process, significantly reducing its environmental impact compared to conventional dyeing methods.

While it provides warmth, it is best suited as a midlayer. For very cold weather, you will likely need to layer it with an insulating jacket or a windproof/waterproof outer shell for adequate protection.

Machine wash cold on a gentle cycle with mild detergent, and tumble dry on low heat or hang dry. Avoid fabric softeners and bleach.

It is ideal for hiking, climbing, mountaineering, and general outdoor activities where temperature regulation and comfort are important.

Ensure the jacket is clean. Residue from detergents or body oils can reduce breathability. Wash according to care instructions, avoiding fabric softeners.

Verify that the jacket is the correct size. While seams are flat, an improperly fitting jacket can still cause pressure points. Ensure the backpack straps are adjusted correctly.

Check for any fabric caught in the zipper. Gently try to clear any obstruction. You can also apply a small amount of graphite (from a pencil) to the zipper teeth to help it glide more smoothly.