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Silk Thermal Underwear Briefs from Japan

Insulated knitted silk briefs (77% silk) for cold-weather base layer support. HTS 6107.99.50 men's underpants with high silk. Retains warmth without bulk.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

Classify as retail vs industrial to avoid end-use shifts

Document non-orthopedic design per exclusions