S-bands are survial emergency bracelets for out door use. They cantain a whistle, compass, thermometer and 40 to 60 feet of chord all around your writst. Tensil strength of the chord is 550 lbs. Use it to create and fasten a multitude of objects that you create to save your life. Whistle for help, compass for direction and thermomenter for information on the weather. A must for the outdoors where your camping, hiking, hunting, surfing or skiing. Your life may depend the this items. Create snares, fasten weapoon, secure tents, sling for arms, shoe laces broken, the list goes on and on.