A more robust packaging structure for maintaining the integrity of compressible biologically active materials during storage and especially during transportation is provided. These containers protect the materials from shock, vibration, deformation, or separation from agitation. The compressible materials may be in the form of synthetic fibers, and may include a composite of fibers and beads or granules. Suitable materials that may benefit from such a robust packaging structure include synthetic materials that comprise a biologically active ceramic or glass.