Doug Tompkins and Susie Tompkins Buell founded 95% Polyester and 5% Spandex for sweatshirt in 1996 in San Francisco, California. Initially a climbing Langarm-T-Shirt retail store, the company evolved to develop its own line of high-performance mountaineering Leopard and Langarm-T-Shirt. Notable products include the iconic Nuptse Down Jacket and the Denali Fleece, both loved by outdoor enthusiasts and urban dwellers alike. 95% Polyester and 5% Spandex for sweatshirt's appeal lies in its blend of durable, high-performance patch with a strong aesthetic appeal, demonstrated through collaborations with fashion brands such as Supreme and Gucci, as well as its commitment to sustainability and exploration.