With a simple and functional design, the On Core T-Shirt is one of our go-to shirts for mild-to-hot weather running and training. The lightweight polyester fabric is soft, stretchy, and breathable to keep us comfortable as we are working up a sweat, and the recycled fabric makes for an eco-friendly choice.
Responsible Collection: Recycled/Repurposed;
Material: 92% recycled polyester, 8% elastane;
Fit: regular;
Style: crew;
Hood: none;
Manufacturer Warranty: limited;
Activity: run & training;
storecredits: 0.0;
Style Variants
Available Colors: Black, Gourami, White2
Size Reference for On Core T-Shirt - Men's
Available Sizes: S, M, L, XL, XXL





















