Reversal fighters Tenshin Nasukawa, in his Isami Tenshin boxing gloves, and Shizuka Sugiyama, flexing in a Reversal RVDDW tank top.

Tenshin Nasukawa Drops the Champion, Shizuka Sugiyama Retires a Winner

BOXING

Tenshin Nasukawa knocked down WBC champion Takuma Inoue and lost a close decision. Four days earlier, Shizuka Sugiyama won her retirement fight at Pancrase 366. Both are Reversal fighters.

Isami BOXER Gloves: New Label, Same Quality

Isami BOXER Gloves: New Label, Same Quality

BOXING

Isami updated the label on their BOXER glove line. "Hard Knock Life" is out. "Just Keep Going" is in. The gloves themselves, construction, leather, performance, are identical.

Tenshin Nasukawa Stops Estrada: Full Fight Breakdown & Official Merch

Tenshin Nasukawa Stops Estrada: Full Fight Breakdown & Official Merch

BOXING
Update, October 2026: The Inoue rematch happened on September 27, 2026. Tenshin dropped the champion in round seven and lost a unanimous decision...
Isami IBX 16 Review + Best Alternatives (2026)

Isami IBX 16 Review + Best Alternatives (2026)

BOXING

The Isami IBX 16 oz boxing gloves are no longer in production, but we still hear from customers looking for them all the time. If you want the closest thing to that old Isami feel, the Isami Pro Boxing Gloves are the premium choice.

ISAMI's president Mr. Iso and Pro Fighter Tenshin Nasukawa

Golden ISAMI Boxer Gloves Shine at Prestigious JBC Event

BOXING

ISAMI's exclusive golden boxing gloves takes center stage at the Japan Boxing Commission annual awards, featuring stars like Naoya Inoue & Tenshin Nasukawa.

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