Acclaimed by emergency care providers and outdoor enthusiasts worldwide (and even beyond the Earth, on NASA space shuttles), the SAM® SPLINT is based on an ancient construction principle: curves are strong. Old-style splints derive their strength from the materials from which they are constructed: metal, wood, plaster, etc. Unfortunately, that means that to be strong, they have to be heavy, bulky, and not easily adjustable to a wide variety of needs. The SAM® SPLINT is built from a thin core of aluminum alloy, sandwiched between two layers of closed-cell foam. Freshly unrolled from storage, the splint is extremely pliable. Bent into any of three simple curves, it becomes extremely strong and supportive for any fractured or injured limb.