Disclosure: I was sent Audio Technica SonicFuel Headphones for compensation.
I own about 10 pairs of headphones. I have them all – noise cancelling, in-ear, lightweight, foldable… you name it. I don’t exactly need all of these headphones, but for the most part each one has served a purpose, with the exception of running.
I seem to struggle to find good headphones for working out. My over the ear headphones were too bulky. My in ear headphones always popped out. My around the ear headphones had to be on full blast because while running, they didn’t actually stay in my ear, just around it!
Then I tried the Audio-Technica’s ATH-CKX5iS SonicFuel™ In-ear Headphones with In-line Mic & Control. These powerful headphones are my go-to workout headphones. They actually fit to stay in place!
The Audio-Technica’s ATH-CKX5iS SonicFuel™ In-ear Headphones come with an awesome selection of ear fitting extras – 4 different size eartips (XS, S, M, L), and three c-tips (S, M, L) for a customized fit.
When I first received them, I assumed that I would use the smallest fittings, however I discovered they fit best in my ear with the small eartip and the large c tip. With this custom combination I was able to run, jump and walk my dog (who likes to tug) without them falling out once!
These unique eartips rotate a full 360° to automatically align with the angle of your ear canal, directing the sound towards your inner ear to avoid pressure and discomfort, while the c-tips fit the curvature of your ear for maximum stability.
Along with the ear fittings, the headphones come with a small storage bag. This sack is a convenient little bag to store my headphones in when not in use. It has a simple pull tie at the top and keeps my headphones from getting tangled.
Not only are the headphones comfortable, in a barely-there way, but they are also great sound quality too! Some of the technical stuff: Frequency Response 15 – 22,000 Hz, Maximum Input Power 40 mW, Sensitivity 100 dB/mW, and Impedance 16 ohms.
The in-line control with mic makes these headphones the all-around useful headphones for on-the-go. The controller feature means that I can take calls, end calls and control the volume of the music played from my smartphone without skipping a beat. 
Last Thoughts
Overall, these headphones have quickly shaped into my everyday workout headphones. They have not failed me yet. They don’t get loose in my ears and fall out, they allow me to take calls and control my music while I am being active. I don’t have to stop to adjust or change a song while I am out running. Comfortable, great listening and handy controller… excellent workout headphones!
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Purchase the Audio-Technica’s ATH-CKX5iS SonicFuel™ In-ear Headphones with In-line Mic & Control (available in black, blue, green, red and white) for less than $100 on Amazon.com!