protection hard hat: the lightweight arc and neck protection hard hat liner can protect your neck and ears from heat and hot ; The material is soft and flexible, which is designed to keep you and comfortableAbsorbent and sweat wicking: the hard hat neck shade is comfy to wear, helping absorb the sweat, covering your neck from the , and keeping the sweat out of your eyes, providing you with breathable and comfy wearing experienceSoft and durable material: the elastic hard hat neck protectors are made of silk ice fabric, which is reliable and durable, soft and breathable to wear, friendly to your skin when draping around the back of your neck and ears; You can soak the neck protector in water to add more cooling effect while others put it on their head and forget it's there; One size fits most hard hatsFit under the hardhat without burden: the hard hat liner fits on your head underneath a hard hat, the hard hat liner is soft, lightweight and skin-friendly, which can make you relaxed without burdenWide range of application: the good elasticity makes the skull hat liner fit for most people and head circumference; The elastic hard hat neck shade can give you a good protection, it can be applied as a sport cap for different outdoor activities, such as fishing, riding, golfing, hiking, traveling, camping and so on, making your sport time more relaxing and enjoyableHead circumference: 48cmMaterial:Ice silkcolour:Photo ColorPackage Contents:1 * black inner cap1 * white liner cap1 * gray liner capOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.