
Relaxed Fit
NEW COLOR ADDED
The most innovative fabrics and highest performance material
60 day returns
100% direct to consumer model without the retail mark up
The Backbone PX is a running short with extra room in the body and wider leg openings. Designed for runners with larger legs or runners that prefer a more relaxed fit short.
Plenty of pocket space

Backbone PX 5" Short - Back
- Center back phone pocket
- Two small back side pockets
- Internal key pocket

Backbone PX 7" Short - Back
- Center back phone pocket
- Two small back side pockets
- Internal key pocket
The finest running shorts you'll ever experience
Highest performance fabrics and materials
TORAY PRIMEFLEX™We hacked running shorts
We split the running short in two: separating outer shell from base liner. The short moves without shifting the base liner, eliminating all chafing.
Field tested
The Backbone PX is a great all around relaxed fit running short with plenty of storage capacity. Designed to be a top performer, whether you are running 2 miles or 200 miles.