The picture below shows an upgraded version with opener with flint
Name: umbrella rope bracelet (with a flint with life-saving whistle Opener)
Material: seven core umbrella rope
Specifications: Length 23 cm, width 2.2 cm
Weight: about 40 grams
With a flint, can be used to take the fire; with a high-decibel survival whistle, distress for help; by with the opener, with the help of a bottle, Used to open the bottle cap.