Uniqlo
Boxy Knitted T-Shirt
F Fiber Grade
Left off the list
77% Rayon, 23% Nylon
$39.90 We left this one off the list.
Listing confirmed live Jun 12, 2026.
Why it earns an F
- Only 0% natural fiber, below the 50% floor.
- Dominated by 23% petroleum synthetic (23% nylon) and 77% regenerated cellulose (77% rayon).
The exact composition
Body 77% Rayon, 23% Nylon
We grade the body or shell, the fabric you actually wear. Synthetic linings or trims are shown here but do not change the grade.