The SKB-5009BL is the perfect transport case for either the original Bose L1 loudspeaker or Bose L1 Model II loudspeaker. The case is made of high density polyethylene (HDPE) that exceeds the ATA category 300 flight specifications. The latches are made of unbreakable fiberglass reinforced nylon and incorporates the world's only TSA accepted and recognized locking latch system. The foam has removable blocks in order to provide the perfect fit for either the original L1 speakers or the new L1 Model II version. A matching L1 Model II pedestal case is available.