CRUSH THE ACTION WITH MIND-BENDING BASS Meet Crusher 540 Active, the ultimate active-use headphones designed to help you get in the zone to enhance your workout. Feel every beat with Crusher's adjustable sensory bass, pushing you to go harder when the workout gets tough. With a sweat and water-resistant nano-coating, Crusher 540 Active stays durable through your most intense sessions. Plus, its breathable fabric earpads keep you cool and comfortable when things heat up. Crush every beat, crush every workout.