deboer, is proud to announce the signing of Belgian triathlon star and 2025 IRONMAN® 70.3 World Champion, Jelle Geens.

Widely regarded as one of the most efficient and dangerous athletes in middle-distance triathlon, Geens joins deboer following a historic run of performances that includes consecutive IRONMAN® 70.3 World Championship titles and a reputation as one of the fastest runners in the sport.

This partnership brings together one of triathlon’s most precise competitors with a brand committed to engineering uncompromising performance in the water.

Geens, known for his disciplined approach and technical execution, has long prioritized feel, efficiency, and marginal gains which are qualities that align directly with deboer’s product philosophy.

As a former Olympic athlete who has successfully transitioned to dominate the middle-distance circuit, Geens represents the modern evolution of triathlon where speed, strategy, and endurance converge.

deboer has built its reputation on developing technically advanced swimwear designed to optimize body position, reduce drag, and enhance feel in the water. The addition of Geens reinforces deboer's commitment to working alongside the world’s best athletes to refine and validate its products at the highest level of competition.

Geens is set to debut this weekend at IRONMAN 70.3 Geelong, kicking off his 2026 season and IRONMAN Pro Series campaign as he continues to build on his momentum as one of the sport’s leading athletes.

The partnership will also include collaborative product feedback and development, further strengthening deboer’s mission to create the most advanced swimwear in the world.