Loopback is the technical term given to the fabric traditionally used to make sweatshirts. It’s a literal description of the construction of the fabric that features loops on its reverse and is also a reference to the original machine that was historically used to knit the fabric: the loopwheel. Having originally been developed for sports garments, the loops on the back of the fabric were designed to absorb sweat from your body, passing it into the garment to keep you cool. Conversely, our Loopback fabric is designed to trap warm air inside, providing an insulating layer for day-to-day wear. We developed our Loopback fabric based on an archive Sunspel garment. It is unique in that it uses an extra fine yarn that is tightly knitted. The resulting fabric is softer, lighter, more resistant to pilling, and ultimately more luxurious than athletic sweatshirt fabric. We make our sweat tops, hoodies, track pants and shorts using Loopback.