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K1 RaceGear FLEX Under Shirts

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K1 RaceGear FLEX under shirts are constructed of the highest quality blend of Nomex and natural viscose fibers. This innovative material construction offers not onl

K1 RaceGear FLEX under shirts are constructed of the highest quality blend of Nomex and natural viscose fibers. This innovative material construction offers not only superior flame resistance and protection against heat transfer, but is the ultimate choice for lightweight comfortable protective gear that can be worn beneath any driving suit. Designed and tested specifically by top pros in Rally Cross, WEC, and other endurance challenge series, K1 FLEX Tech Layers are quickly becoming the top choice throughout all forms of race competition sports. Key features:: * Long sleeve under shirt * 50 percent Nomex, 50 percent innovative viscose fibers for ultimate in weight savings, flame resistance and thermal insulation to combat heat stress and fatigue * Exceeds both SFI 3.3/5 and FIA 8856 homologation standards * Minimal flat stitched seams with specialized flame-resistant thread for added comfort * Special non-chemical dry treatment to promote cooling and combat odor * Highest level of elasticity and softness * Available in black or white in a variety of men's shirt sizes