Tonic is a Canadian designed and manufactured yoga/active wear company which began in March 2004 to create a lifestyle line for today's modern women. The line was inspired by the west coast lifestyle, which supports healthy and active living.

Originally designed to meet the needs of yoga, TONIC's line of workout wear is no longer tied to any one discipline. The clothing is fashionable and functional. Its look is simple and clean, making it easy to wear the clothes for athletics and for urban living. TONIC is a tribute to women through the union of inner and outer beauty. It is created with the focus on fit, function, and fashion.