Some people also send games using the AP prepaid paper envelopes. I had a sealed Mortal Kombat Armageddon (PS2) arrive damaged due to only being in an envelope without any protection. I also had Final Fantasy VIII (which has a thick double CD style case but with 4 discs) arrive with the case smashed into 100 pieces inside a tough bag, the only thing which survived relatively unscathed was the manual, the back cover and one disc (the others were all scratched due to coming loose and mixing around with the bits of plastic that went everywhere, while the front cover was also bent). The tough bag itself really was tough, it was still in good condition despite its contents being obliterated! Save envelopes and tough bags for paper only.