THE INTERSECTION OF MINIMALIST PRINCIPLES AND MAXIMALIST CUSHIONING. A supertrainer that works with you — every stride, every mile. Whether you’re building your weekly base, pushing tempo, or lining up on race day, the Sigma Runner™ is designed to work with your natural mechanics to keep your stride dialed so you can run longer and recover faster. Our new run-specific S2R Last features a perfected, anatomical toe-box that promotes optimal forefoot function. An ultra-breathable jacquard knit upper is designed to contain and cradle the foot over the midsole with targeted exterior and interior laminations. The Linear Platform™ outsole offers smart cushioning and a stable ride. Underfoot, the Sigma’s dual-density midsole blends geometry and materials to help you move efficiently mile after mile. S30™ glass-fiber infused Pebax® plate adds propulsion and torsional control Spectra Foam™ upper midsole provides stability and drives the integrated plate. Nitrogen infused Supercritical EVA base layer cushions every stride without muting ground feel Fulcrum™ cantilevered toe spring creates additional stability at lower speeds and a smooth rocker feel at a faster pace. Perimeter rails in the upper midsole help center your foot through midstance Midsole cutaways reduce weight and slap while increasing flexibility 34mm Stack height 4mm + 2mm offset supports forward momentum without overcorrecting 249g / 8.8oz (Size US 9M) The result? Less fatigue, more flow, no matter your cadence or distance. Unisex Sizing: M = US Men's, W = US Women'sUpper Material: Engineered 3D Jacquard KnitColor: Shadow WhiteStyle: STC1SR300-SWH How it Fits: True to Size Guide
