Ergodyne CHILL-ITS Hardhat pad color is made of cotton with water activated cooling beads and fits suspension headband. Pad is used in construction industries and is reusable. Hard hat pad. Solid blue. Cotton with water activated beads. Size: One size fits all. Closure type : Hook-and loop. Construction, trade, maintenance, landscaping/grounds, assembly/fabrication, material handling, freight/baggage, warehousing/distribution, iron/steel fabrication. Fits hat suspension headband. Lightweight, cooling acrylic polymers. Reversible, reusable. Soak in water 2-5 minutes to activate. Remains hydrated for up to 4 hours. Super absorbent acrylic polymer activates easily and quickly when soaked in cold water 20 minutes. Weight: 0. 04 lbs. 24 per carton. Material: Cotton with water activated beads. Hook and loop closures. Applications: Construction, trades, maintenance, landscaping/grounds, assembly/fabrication, material handling, freight/baggage, warehousing/distribution, iron/steel fabrication. Ergodyne CHILL-ITS 6715 Hard Hat Pad comes with evaporative and cooling properties, and is attachable to any standard hard-hat headband.