... 255g,337g,311g,305g,274g,300g,303g,327g Certifcate: Safety Helmet (HDPE Material)1. Easy to clean with warm water ... in factory or building site3. They feature attachment slots for use with ear muffs or face shields4. They head ... band is adjustable for a sure ,confortable it.5. They are easy to ... ,337g,311g,305g,274g,300g,303g,327gCertifcate:CE Construction Safety Helmet