layer: outer, 100% full textured calfskin.
layer: 3 mm of soft thick foam, that provides a shock absorbing affect.
layer: 2 mm of thick hardened plastic floor plate, which acts to support the bag and protect the instrument.
layer: 20 mm of inner padding of foam, which huddles against the bass body and builds a protective shell for the instrument.
layer: antistatic hardwearing polyamide and two specially positioned leather patches protecting the bridge, strings and instrument hardware.