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The STEINER KK911 is a general-purpose skull cap designed for tradespeople and workers who need lightweight head coverage under hard hats, welding helmets, or other protective headgear. Constructed from cotton for breathability and comfort during extended wear, the KK911 features an elastic closure that provides a secure, one-size-fits-most fit across a universal size range. The flag pattern in blue, red, and white adds a distinctive look without compromising function. At 0.25 pounds, it adds minimal bulk under any overhead protection. This cap suits a wide range of trades environments where basic head covering is required.
The KK911 is suited for general-purpose use across construction, manufacturing, industrial, and trade service environments. It works equally well as a standalone head cover or as a liner beneath hard hats and welding hoods. The elastic closure ensures the cap stays in place during active work. Its cotton construction makes it a practical option for workers logging long hours in environments where sweat management and comfort matter. The universal sizing eliminates the need to stock multiple sizes on a job site.
Designed as a general-purpose skull cap for use as a standalone head cover or as a liner beneath standard hard hats and welding helmets in trade and industrial settings.
No tools or fasteners are required to fit this skull cap. Pull the elastic closure over the head and adjust for a snug, comfortable fit. When used as a liner beneath a hard hat or welding helmet, confirm that the outer protective gear still seats correctly and meets applicable safety standards. Launder according to standard cotton garment care to maintain fit and material integrity.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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