The HAY O2 Lounge Chair by Jonas Forsman is a spacious, ergonomically refined seating piece that redefines comfort through material innovation. Featuring a tubular steel frame and a self-supporting, shrink-fitted fabric seat, the design forms a voluminous silhouette that gently adapts to the body while offering firm, supportive structure. Lightweight yet durable, the O2 Lounge Chair balances minimal use of materials with maximum impact—perfect for both residential and professional settings. Available in a variety of frame and fabric combinations, it can be paired with the matching O2 Ottoman to complete a versatile lounge setup.