The Lululemon All Yours Tee (£55), which is part of the brand's limited edition Earth Dye Collection, is possibly the comfiest t-shirt we've ever worn — you'll want to work out in it and lounge around in it all day (not right after getting sweaty in it, obviously). The range — which also includes joggers, shorts, a tank, and a sweatshirt — is made using lower-impact dyes that are upcycled from plant waste of oranges, beets, and saw palmetto trees sourced from the agricultural and herbal industries. All pieces are available in two tie-dye shades: stone grey and clay.