The Full Zip Jacket 600 has a double-layer high collar and cuffs with thumbholes. The back is longer to prevent gaps. Ullfrotté Original 600 gram is best used in colder conditions or when you don't intend to move around much. It can be worn under a windbreaker or a water-resistant outer layer. In this case, it is best to wear one of the thinner base layers underneath, such as Woolpower LITE or Ullfrotté 200, which are designed to be worn closest to the body. By wearing Woolpower directly on your skin, you get the most out of all the good properties of wool. 70% Merino wool 28% Polyamide 2% Elastane