Company registration number: 06866013 | VAT number: GB 865368680 7 Days Active’s forte-and these leggings are a prime example. Crafted from a stretchy nylon blend, they’re coloured in green, then decorated with complementary panels of yellow and blue. Designed for sweating it out, they promise a high-waist, second-skin fit that promises to keep you cool and dry while you’re in the gym.