Isifihla-buso Sokuhlinzwa Esilahlwayo kanye Nesokuhlinzwa Ubuso be-ASTM Level 3 buso buhlinzeka isithiyo somzimba esiyizingqimba ezi-3 ukuvikela umuntu osigqokile kuketshezi, ukungcoliswa, impova, uthuli, nezinye izinhlayiya ezisemoyeni ezihlolwe ngelebhu ngamaphesenti angama-98 e-BFE. Futhi izifihla-buso ezikhanyayo zakhiwe ngezindwangu ezingezona ezilukiwe zesikhumba kanye nezihibe zezindlebe ezithambile kakhulu amahora wokugqoka ngokunethezeka.