Round 2 of the adiZero Aegis features some changes, along with many familiar features. The midsole is virtually the same: underfoot a soft, adiLite layer that’s atop a layer of adiPrene+ with the stabilizing ForMotion cassette in the heel. The outersole has received some minor alterations but still provides good durability and traction. The upper shows the most significant changes while maintaining its original objective: Align the foot over the low-profile sole while offering a touch of support. The original featured a tongue that opened only on the lateral side to shore up the overpronating foot. This version features two woven fabrics—stiffer, nonstretch on the medial side, open airmesh laterally—to achieve the same objective. The result is breathability and support. Overall, the lightweight and responsive Aegis 2 features flexibility and efficiency with a measure of stability that’s enhanced by the low profile, making it ideally equipped for faster-paced running.
Testers: “Close, racer-like fit. Low profile makes them very stable, and improves reaction to the ground. Very light trainer; I’d say light and snappy. [Compared to the original] it is good, though not an improvement.”
Updates the adiZero Aegis • Recommended for: medium- to high-arched feet with neutral biomechanics to mild overpronation • Sizes: Men 6.5–13,14,15; Women 5–12 • Weight: Men 10.3 oz. (size 11); Women 9.0 oz. (size 8) • Shape: semi-curved • Construction: Strobel slip- lasted