1.material:HDPE 2.pin lock with 6 point fixing plastic harness 3.economical type ... well as export division. Our main products include: Safety Glasses, Safety Goggle, Welding Goggle, Safety Helmet, Welding Mask, Dust Mask, Respirator, Earmuff & Earplug ... of stable quality and big production capability . 1.material:HDPE2. pin lock with 6 piont fixing plastic harness ,adjustable and comfortable ...