They are suitable for use in first aid kits and first aid training seminars
They offer other multiple uses: sling to support shoulder or injured limbs (arm, elbow, wrist, etc), tourniquet or esmarch bandage, stabilize and secure splinting on joints, secure instant cold or hot packs, secure wound dressings on large trauma wounds, and compression bandage to stop or reduce bleeding (only if no other medical compress bandage is available)