Elite carbon-plated racing shoe featuring revolutionary dual-foam technology with PWRRUN HG and PWRRUN PB foam for maximum energy return. Engineered for marathon and half-marathon racing with an 8mm drop and weighing just 7.5oz. The full-length carbon fiber plate and SPEEDROLL technology deliver explosive propulsion while maintaining exceptional comfort for long-distance performance.
Sizing
Length: True to size, though runners coming from the Pro 1 to 3 may prefer a half size up
Width and toebox: Normal width with more volume than the Pro 1 to 3, accommodating but still narrowing near the little toe, so genuinely wide feet should be cautious. Standard width only.
Fit notes: The heel counter is thin and flexible with little padding, so most runners need to lace firmly, sometimes using the top eyelet, after which there is no heel slippage. The gusseted tongue tends to fold on itself when cinched. No real break-in.