The Sparv Anorak is made with what's called a 2.5 layer structure: a weatherproof, breathable membrane is first applied to the inside of the main fabric, and an ultralight liner material pattern is then printed on the inside of that membrane. The result is astoundingly light and packable. Due to the ultralight nature of this liner print, we do not recommend using a heavy backpack with this anorak. This anorak is a great choice to bring along it starts raining, and as weather protection on daytrips. Refer to size chart sec - Proof 2.5L material: waterproof, windproof, breathable, material weight just 105g/m² - The surface fabric is made of recycled polyester - Half-length zipper - The entire jacket can be packed in its own pocket if needed - Traditional anorak pocket at the front - Hood, hem and cuffs with elastic trim - The hem is longer at the back