Belt of Bodily Mastery (3.5e Equipment)
From D&D Wiki
Belt of Bodily Mastery: This belt of woven rope adds one to its wearer's unarmed strike level, if that character has any abilities that rely on unarmed strike level (such as a member of the stormfist class).
Weak evocation;CL 5th; Craft Wondrous Item, greater magic fang; Cost 3,000 gp, 240 XP; Weight: 1 lb.; Market Price: 6,000 gp