JD.Gems 550 Parachute Cord Emergency Military Survival Bracelet Whistle Wristband-Black Weight:24g,Material:Polypropylene skin+Polyester core.The bracelet diameter is about 3 inch,width is 0.8inch,perimeter is 18cm,and umbrella rope diameter is 4mm.Single rope tension at about 150 kg.Monochrome bracelet open umbrella rope length is about 3.5 meters,Double color bracelets open umbrella rope length is about 1.8 meters. An emergency tourniquet can be improvised.Worn as a bracelet or easily attached to a pack or belt, it is always available and a very wise addition to any camping, hiking, hunting or traveling gear.Survive in Style With this stylish survival kit.Each bracelets are 127% tied and assembled by hand. Put up a clothes line to hang clean laundry to dry.It can be unwoven and used in an emergency to do anything from help construct an emergency shelter, lash down cargo or gear or secure a splint to stabilize a broken bone as well as many other uses. Take this light and convenient bracelet to your travel addition and it will help you in emergency unexpectedly. PLEASE NOTE: Caution is advised when wearing the survival bracelet. If caught in any object, it can cause injuries since the cord will not break nor slide of your wrist.