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6109.90.10.75/Women's Merino Wool Blend Thermal Undershirt/Mexico

Women's Merino Wool Blend Thermal Undershirt from Mexico

This thermal undershirt is knitted from a blend of man-made fibers and merino wool, designed with a waffle texture for superior heat retention and moisture-wicking. It falls under HTS 6109.90.10.75 as a women's thermal undershirt made primarily of man-made fibers, excluding those with drawstrings or ribbed waistbands at the bottom. The close-fitting crewneck style provides layering under outerwear without bulk.

Duty Rate — Mexico → United States

42%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Verify fiber content exceeds 50% man-made fibers via lab tests to confirm classification under 6109.90; natural fiber dominance shifts to 6109.10

• Ensure no drawstring, ribbed waistband or tightening at bottom to avoid exclusion from heading 6109; document construction details

• Label as 'thermal undershirt' with care instructions; common pitfall is misclassifying as outerwear if sold standalone