Whether high-performance looks like a PB on the track or an extra five minutes of workout time, the Seeker Tank is for you. Made from a super soft recycled polyester, it's a lightweight performance piece that features a citric acid-based treatment to help keep it feeling fresh.From carbon emissions to clothing — this top is made using an innovative carbon recycling technology, LanzaTech. Carbon emissions from manufacturing sites are captured before they're released into the atmosphere and converted into a raw material that makes polyester fibres.