Rule 311-1-04.3 | Class B shirt: fabric specifications.

• Effective: December 15, 2025
• Promulgated Under: 111.15

(A) Weave and content: one hundred per cent synthetic, tropical weave in a blend of sixty-five per cent dacron polyester and thirty-five per cent lenzing rayon.

(B) The tropical dacron polyester/rayon fabric shall conform to the following fabric specifications.

(1) Tropical weave.

(2) Color: black.

(3) Manufactured by delta mills style no. 9270 or equivalent.

Last updated December 15, 2025 at 7:50 AM

Supplemental Information

Authorized By: 311.28
Amplifies: 311.28
Five Year Review Date: 12/13/2030
Prior Effective Dates: 7/1/1976, 7/21/1979, 12/15/2001, 11/11/2019