The premium fabric and construction details in this mock turtleneck are what make it a great workwear item. This 6.25-ounce knit is made of 88% cotton / 12% high-tenacity nylon blend, and it features rib knitting at the collar and cuffs, a squared-off bottom that stays tucked in, and side-seam construction that minimizes twisting and allows freedom of movement. The Carhartt logo label is placed on the left sleeve. You can wear this as a layering piece in cold weather or as added protection under a woven shirt. NFPA 70E Compliant HRC Rating 2 (Clothing items may be layered to reach a higher HRC Rating.) ATPV Rating 10.9 Available in Dark Navy. Special Order Item - allow two weeks for delivery. See Below for Big and Tall Sizes. Carhartt Flame-Resistant Long Sleeve Mock Turtleneck Shirt caflloslmotu$58.00Size: Small FRK20DNY-SMedium FRK20DNY-MLarge FRK20DNY-LX-Large FRK20DNY-XL2X-Large FRK20DNY-2XL Carhartt Flame-Resistant Long Sleeve Mock Turtleneck ShirtSame features as above - Big and Tall Sizes. Special Order Item - allow two weeks for delivery. caflloslmotu1$64.00Size: 3X-Large FRK203DNY-3XL4X-Large FRK203DNY-4XLMedium Tall FRK203DNY-MTLarge Tall FRK203DNY-LTX-Large Tall FRK203DNY-XLT2X-Large Tall FRK203DNY-2XLT3X-Large Tall FRK203DNY-3XLT Need more information? Please feel free to contact us at 1-800-592-6940 - Ask for Extension 547 or Internet Sales.