Features:
Easily adjust insert height to fit different caps, suitable for safety helmet, baseball hat, etc.
Built-in strengthening bar, guard against bumps, scrapes, bruises and other min-or head injuries.
Made of PE material, comfortable and breathable.
The multiple ventilation ports enhance airflow and reduce heat to keep your head cool for comfortable all-day wear.
Suitable for automobile assembly, mechanical processing, industrial manufacturing, workshop processing, outdoor sports, etc.
Specification:
Product name: PE protective lining
Lining material: PE (polyethylene)
Color: White
Hat circumference size: 58-62cm
Season of use: Four seasons
Product features: Universal lining, one size fits all, can be embedded in market universal hats
Use industry: automobile assembly, maintenance and maintenance machining, industrial manufacturing

Packing list:
1 * Hat lining

Note:
1. Due to manual measurement, please allow an error of 1-3mm.
2. As different computers display different colors, thank you for your understanding, the actual product color may be slightly different from the image.