Secumar Arkona 275N inflatable lifejacket • Automatic activation - EN ISO 12402-2 certified• Buoyancy class: 275N • Real buoyancy: 280N • Harness: EN ISO 12401 certified with quick release buckle, Stainless Steel ring for safety webbing and safety strap • Size: one size for adults >50 kg • Chest circumference: 80/135 cm • Navigation: Pleasure craft with no limits