Welcome to iS3, a triathlon teamwear brand built from real experience, real passion, and real purpose. Born in South Wales, home to the legendary Ironman Wales, we design custom performance kit shaped by the demands of the sport and the athletes who live and breath it.

iS3 is named after my children, Ivy and Seb. They are a daily reminder of why I do this and the example I want to set: work hard, dream big, and believe anything is possible. The “3” represents the disciplines of triathlon: swim, bike, run.

Every product we create is driven by one mission: deliver high‑performance racewear that fits, lasts, and performs without inflated price tags.

Welcome to a brand built on family values, athlete insight, and uncompromising quality.

See you on the start line.

— Chris