Jekete lopulumutsa moyo limakhala ndi madzi abwino, osasunthika, osavuta kuvala ndikuchotsa, samakhudza zochita za anthu, ndipo amatha kutsimikizira chitetezo cha anthu pamadzi.Asilikali athu ali ndi jekete yodzitetezera yamtundu wa vest.Chosanjikiza chopanda madzi pamtunda ndi tepi yamagulu awiri opangidwa ndi mphira wapadera.Pali matumba 4 oyandama odzazidwa ndi kapok kutsogolo ndi kumbuyo.Kulemera kwathunthu ndi 1.5 makilogalamu okha, koma kumatha kutulutsa makilogalamu oposa 16 a Buoyancy, wankhondo wokhala ndi zida zonse amavala ndikuyandama panyanja, pamwamba pa madzi sangadutse mapewa.Ngakhale jekete lamoyo litang’ambika, pali zokometsera zambiri.

Kuphatikiza pakupanga chisangalalo chokulirapo, jekete yoyendetsa ndege ya Naval Air Force ilinso ndi mawonekedwe odziwika bwino komanso kukana shaki.Mtundu uwu wa jekete wokhala ndi moyo nthawi zambiri umakhala mtundu wa vest.Kuwonjezera pa matumba anayi oyandama odzazidwa ndi kapok pamphuno yake, palinso chitoliro chowomba pa mbali yotulukira ya thumba loyandamalo.kupita kunyanja.
Jacket ya moyo, yomwe imadziwikanso kuti vest ya moyo, ndi mtundu wa zovala zopulumutsa moyo, zopangidwa ngati chovala, chopangidwa ndi nsalu ya nayiloni kapena neoprene (NEOPREN), zinthu zowonongeka kapena zowonongeka, zowonongeka, etc. Moyo wautumiki wambiri ndi 5. - Zaka 7, ndipo ndi chimodzi mwa zida zopulumutsa moyo pazombo ndi ndege.Kawirikawiri mtundu wa vest, wopangidwa ndi thovu pulasitiki kapena Nkhata Bay.Ili ndi mphamvu yokwanira yovala pathupi, kotero kuti mutu wa munthu womira utuluke m'madzi.