Pay in 4 interest-free payments of $61.25 Learn more
Ships within 48 hours · Estimated delivery Sep 10 - Sep 15
The Quad Lock Sports Armband is comfortable and lightweight and fits easily over activewear
you can be confident your smartphone will stay securely attached as you ride
Compatible with MagSafe products
the patented dual-stage lock means you can ride with confidence
Stryd Running Power Meter Superfruits The Quad Lock Sports ArmbandThe world's first wearable power meter measures runner's running efficiency, and guides runners to personalised performance enhancing training and form changes. Stryd measures running efficiency with a tiny wearable power meter that clips to your shoe! Power: The direct measurement of running efficiency. Exercise physiology research demonstrates that running 10% more efficiently (economically) can cut 5k time by almost half a minute. Stryd accurately