Average Heart Rate Yes

Click on the Size Guide link listed above for specific measurement guidelines of various treatment areas

Asymmetric toe box

Tendinitis

Made with 100% skin soft and lightweight merino wool in a long-lasting knitting quality

Saucony | Spitfire 4 | Men's | Black/Silver Adjustable Straps Average Heart Rate YesA fantastic value for the entry level sprinter, the Saucony Spitfire 4 offers the ideal balance of comfort and control. The snug fit of this spike keeps your feet locked in place and the use of a molded quarter cage offers added support. To further provide great value, a 7 pin pebax plate offers optimal traction with plenty of versatility to take on a wide range of sprinting events. If you're new to sprinting or simply looking for a versatile, value