Noise-Isolating IPX-7 Sweatproof / Waterproof Gym Work Out In-Ear Headphones with Enhanced Bass Works with Moto X / Samsung Galaxy S IV & More! *Bonus Accessory Bag* IPX-7 Waterproof / Sweatproof earbuds are great for swimming, running, intense gym workouts, surfing and more! Noise-isolating earbud shape for complete audio immersion Innovative silicone ridge holds the ear bud in place by conforming to the rim of your inner ear High-quality drivers with enhanced bass deliver balanced, premium audio Ergonomic design for a comfortable and secure fit. Includes 3 sizes of soft, silicone ear gels