1) Our store different products, different price, because different material and different colors! 2) For customs clearance, we will declare products value less than $20 3) All the items are free shipping, and 7-15 days from China to USA * FAST Helmet Military Model Base Jump Type with Goggle * 1) Lightweight, Hard Shell Design 2) Completely Adjustable from size of headband to height of helmet 3) Easily tighten/loosen the headband via rear adjustment dial * 4) Chinstrap lined for comfort 5) Removable, adjustable internal padding 6) Tactical Side Rails fit all kinds of accessories 7) Integrated NVG Mounting Point (NVG mount not included) * 8) Velcro panels on right, left, and backside of helmet for Morale Patches, Nameplates and IR / Reflective Tabs 9) Head Circumference (mm):590mm-620mm