The headphones on this list are suitable for most workouts. However, swimmers may notice we don't have any headphones that will work in the water. While we weren't able to test swimming-friendly headphones for this review, there are some good products for swimmers available. When looking for swimming headphones, there are some non-negotiables. The most obvious is that you'll need fully waterproof headphones. For electronics, look for IPX waterproof ratings. For continued use in the water, you want a rating of IPX8. Also, earbuds can fall out during your swim, and you don't want to go diving while doing laps. Your best bet will be a pair of bone-conduction headphones that strap around your ears for a more secure fit. Additionally, Bluetooth technology doesn't work well underwater, which is why swimming headphones require either built-in digital storage (like the MP3 players of old) or a transmitter. Popular options include the Shokz OpenSwim and Zygo swimming headphones.