Baki Hanma x HEATTRAP Collaboration Sauna Shirt Launches for 35th Anniversary
The crossover ties the franchise's decades-long endurance to a merchandise item that literalizes the series theme of extreme physical exertion.
Reporting from 1 source: Anime Anime.
A limited-edition sauna shirt collaboration between Baki Hanma and sportswear brand HEATTRAP went on sale July 7, 2026, to mark the manga's 35th anniversary. The shirt, which the brand calls a wearable sauna, features three front designs with a shared demon face on the back. It is priced at 8,778 yen and available in sizes M through 2XL.
HEATTRAP's sauna shirt, a garment designed to trap body heat and induce heavy sweating, now carries Baki Hanma imagery. The collaboration is timed to the 35th anniversary of the original Baki manga, which began serialization in Weekly Shonen Champion in 1991. The shirt uses the brand's proprietary fabric blend of polyester and spandex and comes in four sizes. All three front variants share a common back print: a demon face. The item is sold exclusively through HEATTRAP's official online store.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.