Swiss shoe company On—one of the fastest-growing footwear brands—has done very well for itself, growing into a $3 billion company on the giant puffy soles of its very garish shoes. Today, the company announced three new kicks and the opening of a new production plant in South Korea that will make many, many more—at least, that’s the goal. Specifically, the company is focusing on the production of its newest, weirdest shoe—a giant soled laceless running shoe with a single-piece toe box made of “hyper-foam” plastics sprayed on by robot arms. The plastics are 40 percent biofoam, and the shoe is made of just eight pieces; On says its minimalist approach saves on the shoe’s carbon footprint. The LightSpray Cloudmonster 3 Hyper is a switch-up from On’s first shoe that uses its sprayed-on toe box technique, the Cloudboom Strike LS. Along with adding the LightSpray branding to the thing, the primary difference is the switch to the Cloudmonster model, which, in On shoe lore, tends to provide more cushy soles. This new version has 20 percent …