On Women Core-T - Black Size:XS Fiber content: 36% CoolMax EcoMade®

Fiber content: 36% CoolMax EcoMade® 62% Nylon 2% Lycra®

93% Recycled Polyester 5% Elastane 2% Silicone

Super critical foam midsole

Emblematic of our longstanding trail history

Learn more about our unique and proprietary OOfoam™ Technology

On Women Core-T - Black Size:XS Fiber content: 36% CoolMax EcoMade®Go back to basics with this lightweight and versatile tee. Designed for the everyday runner's wardrobe. Key features Lightweight fabrics that won't slow you down Simple design that's easy to style Made in a single color for wardrobe versatility Works year round so you can wear it in any weather A classic staple for your running kit Materials Main Fabric: 92% Recycled Polyester, 8% Elastane