Osaka Footwear KAI Mk1 - Pro Tour | Fluorescent LimeThe Kai, Versatility Reinvented. The Kai is built to perform across all surfaces and scenarios, whether you're on the hockey pitch, hitting the padel court, deep in training, or taking it slow on recovery days. Its the all rounder your rotation needs. Now upgraded with our new dual layer mesh, the Kai features a breathable 220g inner layer for airflow and comfort, paired with a structured 310g outer mesh for durability, support, and a bolder look.