From the Slam Jam x Umbro Autumn/Winter 2026 collection, the Training 08/10 T-Shirt in arthracite reimagines classic sportswear through a contemporary lens. Crafted from 100% polyester, it features a boxy fit with a bold color-block design, complemented by breathable mesh panelling for enhanced comfort. Embroidered branding and a woven logo patch complete the look, blending performance-driven detail with Slam Jam's signature streetwear aesthetic.