Mammut Long Sleeve Clothing

Can't decide between down or synthetic insulation? Learn to compare the compressibility, warmth and weight of insulated outerwear options.

Learn the basics of layering clothing so you can stay comfortable outdoors. Find out how to use base layers, middle layers and outer layers to stay comfortable and active.

Learn how to test your rainwear’s durable water repellent (DWR) coating and how to revive existing DWR or apply new DWR.

Keep your GORE-TEX clothing waterproof with these cleaning tips, and learn how to tell if the durable water repellent coating needs renewal.

This beginner-level series covers everything you need to know to purchase and care for a rain jacket.