Regular-fit tee made from soft single jersey fabric for everyday comfort.

The Boston Marathon 2026 Retro T-Shirt is an iconic piece designed for runners, fans, and anyone who values the spirit of endurance and achievement. Crafted from single jersey knit fabric, this tee offers a soft, breathable feel against your skin. The regular fit provides a timeless silhouette, while the classic branding details add authenticity to your look. With its simple design, adidas brings together performance and heritage seamlessly. Make this tee a staple for training, leisure, or everyday wear for a stylish, sporty look.