Lightweight, Protective, Work-in Case The EVA foam material is lightweight, stiff, and shock-absorbent, so it protects your device without being heavy.Your device can sit securely inside the case as you work.The convenient front pocket carries flash drives and other miscellaneous materials you need to work.The elastic corner straps inside the case help hold your device in place.Inside the case, a slender layer of foam on one side and raised ridges on the other provide added protection for your device.