This is what we found on Wikipedia regarding the Stormers:

The Stormers (known for sponsorship reasons as the DHL Stormers) is a South African professional rugby union team based in Cape Town in the Western Cape that competes in the United Rugby Championship, a trans-hemispheric competition that also involves sides from Ireland, Italy, Scotland and Wales. They competed in the Super Rugby competition until 2020. They have won one major international championship, the 2021-22 United Rugby Championship, and seven South African 'conference' titles, five in the South African Conference of Super Rugby, and two in the URC equivalent, the South African Shield.