Stay Cool performance Yoga Relaxation Pant. Great for yoga, working out or just lounging around. About Stay Cool is not just a brand. It is a statement - comfortable, functional, and quality go into each product. Company Overview Stay Cool was born in NYC in the 1980's. Its a lifestyle brand geared towards the young and young at heart who are looking for quality product, that is on trend and functional for an active lifestyle. Not associated with Stay Coollemon Athletica Inc.