Norrona Senja Equaliser Stretch tights are developed for trail running, but can be used for all activities where you want to use tights. Norrona Senja Equaliser Stretch tights are developed for trail running, but can be used for all activities where you want to use tights. Norrona uses equaliser stretch nylon in this product because it is the most durable and lightweight fiber we know, as well as its quick dry properties. Norrona uses elastane to get the flexibility, tight fit, support and great movement. Around the lower legs Norrona uses a stretchy and lightweight flex1 softshell fabric for reinforcement, and Norrona uses this because it offers excellent durability, high breathability, and effective moisture transportation. The main equaliser stretch fabric used is a 65% recycled nylon and 35% elastane 190 g/m2 blend. It offers great stretch, durability, comfort and moisture management. Norrona also uses a slightly lighter fabric on the back of the legs for better breathability and comfort, it is made of 82% recycled nylon and 18% elastane with the weight of 170 g/m2. The reinforcement fabric is a 200 g/m 90D 64% recycled polyamide, 20% recycled polyester and 16% elastane double weaved flex1 fabric, a mid-weight quality perfect for all-year use. It is