ZAMST, a sports brand by Nippon Sigmax, launched the 'ZAMST FAN VEST' on May 15, 2026. Designed for active outdoor sports, the fan-equipped vest features a layout that doesn't hinder movement like golf swings. It uses titanium-processed material for heat shielding and UV protection. Priced at 18,000 yen (excluding tax), it includes a lightweight battery and is compatible with standard mobile power banks.