Spira Size:W 11 | M 10 Start with 30-60 minutes at

Start with 30-60 minutes at the end of the day or after a hard workout and gradual increase based on comfort

Perfect for athletes who engage in swimruns or tackle technical trails

The gusseted tongue keeps the tongue completely attached to the boot

the Alpine provides life-changing comfort and superior performance by allowing your feet to move naturally

Spira Size:W 11 | M 10 Start with 30-60 minutes atBuy Now The upper of the Spira model is dyed in delicate EarthColors natural colors from Wildling's partner Archroma. Archroma has almost completely replaced the petroleum content with plant based waste materials in its dyes, typically 70 to 100% in commercially available dyes. The upper material consists of a mix of cotton and hemp. Both fibers naturally regulate temperature and moisture so that our feet are well ventilated. The inner lining is also