2018 marked the 30th anniversary of the Seoul Summer Olympics in South Korea. To celebrate the momentous games, adidas created the UltraBoost Clima 'Seoul 1988' in September 2018. Preserving features from other UltraBoost variations, these runners feature a breathable Primeknit upper, Boost midsole and a South Korea-inspired twist. Alternating red and blue heel counters, black stripes along the white midfoot caging and a yin-yang symbol on the tongue bring back memories of the '88 host country.