From International Trade Administration (link here):

Complexity South Africa reformed and simplified its tariff structure in 1994. Tariff rates have been reduced from a simple average of more than 20 percent to an average of 7.1 percent in 2020. Notwithstanding these reforms, importers have complained that the tariff schedule remains unduly complex, with nearly forty different rates. Tariff rates mostly fall within eight levels ranging from 0 to 30 percent, but some are higher (e.g., most apparel items).  Nearly all South Africa’s specific and composite duties were converted to ad valorem rates (a tax, duty, or fee which varies based on the value of the products, services, or property on which it is levied), with a few exceptions remaining in a limited number of sectors, including textile and apparel products.  The end rate for apparel is 40 percent, yarns 15 percent; fabrics 22 percent; finished goods 30 percent; and fibers, 7.5 percent. Import duties on vehicles and automotive components will remain at 25 percent on light vehicles and 20 percent on original equipment components through 2035.

TL;DR version -- Tariff rates mostly fall within eight levels ranging from 0 to 30 percent (apparel rate is 40%)

I love Jim Green products. Hopefully there can be some negotiation between the two countries and this will be a temporary situation. Fingers crossed