While a cotton tee like the Unisex Garment-Dyed Triathlon Tee is great for warm-ups, post-race recovery, and travel, it is not recommended as your primary race shirt for swim, bike, or run segments, especially for longer distances. For race performance, technical tri tops or trisuits are preferred for moisture management and to reduce chafing.

To maintain the color and quality of the Comfort Colors tee, it is best to wash it in cold water and tumble dry on a low setting. This helps preserve its vintage look while minimizing shrinkage.

For shorter events like a sprint triathlon, a cotton tee might be used for warm-ups or possibly the run leg, provided the conditions are dry and cool. However, for Olympic, Half-Ironman, and IRONMAN distances, it's strongly recommended to use tri-specific apparel for better moisture management and comfort.

There is no official “IRONMAN approved” fabric list. Apparel for races must be safe and adhere to logo/branding rules. Technical suits are commonly used for competitive edges, but use branded cotton tees in the race village or post-race for comfort.

The cotton tee can be used as a warm-up layer over your race kit before the start and for post-race recovery. It is ideal for traveling and offers team visibility with printed logos. However, ensure it doesn't obstruct quick transitions by being easy to remove.