Ensure your safety and comfort on the track with the K1 Race Gear Precision Nomex® Long Sleeve Undershirt. In the realm of motorsports, safety and comfort are paramount, and this long sleeve undershirt is meticulously crafted from inherently fire-retardant materials, ensuring durable flame-resistant properties. Engineered with a focus on affordability, comfort, and enhanced protection, this undershirt is a must-have for any serious racer. Crafted from durable and soft-knit material, our Precision base layers guarantee optimum comfort during demanding hours on the track. The flat, interlock stitching reduces friction points, ensuring exceptional performance when worn under a driving suit. A standout feature is the minimal flat-stitched seams, reinforced with specialized flame-resistant thread, eliminating discomfort and pressure points, allowing you to concentrate on your performance without distractions. Prioritizing safety, this undershirt complies with the stringent SFI Foundation 3.3/5 specification. Crafted from Meta-Aramid material, it not only offers protection but also keeps you cool and comfortable with its moisture-wicking properties. For your convenience, the Precision Nomex® Undershirt is available in both long and short sleeves. Please Note: Only the long sleeve Precision model is SFI 3.3/5 rated. The short sleeve version is manufactured with the same materials and to the same exacting standards; however, it is not SFI Rated. Prioritize your safety and comfort on the track with the K1 Race Gear Precision Nomex® Long Sleeve Undershirt, ensuring certified protection without compromising on comfort. Precision Nomex® Underpants are also available and sold separately.