ASTRO A38 Bluetooth Headset (188 g). Lightest wireless & active noise cancelling cans that actually work. Also try: SONY SBH60 (125 g). Turn former nuisances (e.g. sitting in a plane, bus or metro; doing dishes & vacuuming the floors) into private aural pleasures. Leary was right: you should turn on, tune in & drop out.