Wobble-free, Snug Fit Featuring our signature open-ear design, an adaptable ear hook for improved comfort, and weighing only 8.7g*, it’s not just what you want; it's what you didn't know you needed. Got the rhythm? Go ahead and move - your earbuds won’t budge. Featuring an ultra-fine 0.75mm flexible Ni-Ti memory alloy with a soft silicone finish, our Air-Earhook design keeps your earbuds snugly in place.