Black pure foil / mylar ziplock bags. 

A ziplock for ease of use makes these black flat pure foil bags a must for packaging anything from food stuffs to computer components. Keeps contents protected from oxygen, light and smell. Thick 130 micron foil ensures a robust seal that won't fail. Ideal for use in a chamber vacuum machine or simply close the ziplock for a non vacuum seal. 

Stylish and discreet packaging.