You're going to want one in every colour.

Sustainable footwear brand Allbirds is expanding its offering today with the launch of its first clothing line. The US-NZ brand is now bringing its expertise in textile innovation to clothing in the form of a curated collection of essentials.

The brand’s debut clothing line includes a puffer, wool sweater, cardigan and T-shirt – or as the brand calls it, “apparel with purpose.” And in a world-first, each item is labeled with the carbon footprint of the piece. As with its intelligent footwear offering, the Allbirds clothing line utilizes hard-working fabrics to keep you warm and dry, without hurting the environment.

The hero piece in the line-up is the TrinoXO Tee. The shirt ($65) is made with a proprietary material innovation that uses naturally derived fibre made from the discarded shells of marine life (combined with Tencel Lyocell, a breathable tree fibre, and merino wool). These shells are the second most abundant biopolymer on earth and the chitosan – a fibre found within the shells – “has unique capabilities allowing your clothes to stay fresh longer without relying on extractive minerals like zinc or silver,” the brand notes in a release. The tee – available in six colourways (three classic, three limited edition) each for men and women – is incredibly soft to the touch and cut with the perfect amount of slouch for casual comfort.

The line also includes a water-repellant puffer ($340), available in charcoal for both men and women, as well as cream for women and forest green for men, that uses a blend of Tencel and recycled polyester as a down-alternative that still provides winter-proof warmth, as well as a slightly oversized wool cardi ($200) and sweater ($185), both of which are made with responsibly-sourced (and super soft) New Zealand Merino.

If you’ve been wanting to give your winter wardrobe a sustainable makeover, look no further.