ACS PRO GORE-TEX sizing-chart-Bags & Packs DRX DEFY GRVL is a

DRX DEFY GRVL is a lightweight guided trainer that empowers you to keep going

This 5-L version is ideal for those shorter outings and races

Commit to being the change

A weatherproof no-compromise mid-cut hiker featuring Active Chassis technology for lateral guidance

while Energy Foam gives your run extra pop and response

ACS PRO GORE-TEX sizing-chart-Bags & Packs DRX DEFY GRVL is aWinterproofed technical trail legacy. ACS PRO GORE TEX is archetypal technical footwear with a modernised functional upgrade, now winterized for inclement conditions thanks to its GORE TEX waterproof membrane. Rooted in history, updated with a stride stabilizing Agile Chassis System for a progressive, weatherproof adaptation of a trail icon.