This product is a hard hat liner, which is made of sponge and plastic material, with good texture, sturdy and practical. Easy to install and use, it can be easily applied to your , a very practical accessory that will meet your needs well. Features -Color:Multi -Material:Plastic, sponge -Size:28.00X22.00X19.00cm/11.00X8.65X7.47in -Easy and precise adjustment with the button knob: the button knob allows for effortless and accurate adjustment. -Designed for construction : this hard hat lift liner is specifically created to fit construction . -Foldable design for portability: the hard hat suspension replacement can be easily folded for convenient transportation. -Chin strap for added protection: this hard hat liner is equipped with a chin strap to provide extra safety. -Comfortable inner lining and chin strap: the inner lining and chin strap are designed for maximum comfort. Package list: 1 x hat liner