Ratchet Type Safety Helmet with Ventilations

Vented holes are also designed on this model of safety helmet for optimized airflow.  The outer shell material can be chosen from HDPE or ABS. It adopts 6 points suspension,materialis available from plastic and textile. Ratchet can be chosen from pin lock or wheel type. Ideal design for adapting additional components like earmuffs or goggle. Detailed Description  Shell Material:  ABS/HDPE  Function:  Head Protection  Size:  28.5 X 22  X 14.5 CM  Applicatoin:  Construction, Industry, Mining, Gardening, Agriculture  Adjust Manner:  Pin Lock/Ratchet (53cm-64cm)  Harness:  6 points webbing&nb…