Nylon and plastic Imported Application universality: 3 point adjustment ,Suitable for all head size(Children and adults), Fit for most ordinary helmets,such as Fast/MICH/ACH/IBH /PASGT helmet airsoft helmets, Easy to Install,4 Points be Fixed, Tactical Helmet chin strap grabs chin firmly and safely Stable Suspension System: Suspension system improves security and portability ,Adjust the snap closure is be on the Left side suspension system improves security and portability High Quality ABS plastic & nylon webbing,the width of the webbing is 1/2in,very comfortable and good stability Products include : 1*Helmet Chin Strap 8x Bolts, 8x Screws,2*hook and loop Products include : 1*Helmet Chin Strap 8x Bolts, 8x Screws,2*hook and loop