Okay, so who says just because something is old, it isn't useful? These genuine U.S. surplus Plaster of Paris bandages are still sealed, and look like as new as the day they were packed, which happens to be in 1955.
These were used during Korea and Vietnam to make expedient casts. I have tested one of these, and they do become pretty rigid if wrapped correctly. Takes about 35 minutes for it to dry, but if you're using this in an emergency situation, that's better than just about any option.
Listing is for ONE bandage that measures 3"x3 Yards. These are still sealed in their original plastic bags, and are new old stock. PERFECT for a survival kit or bug out bag. Lightweight, practical, and VERY useful.