Oumers 4 in 1 Outside Emergency Tools Set / Kit Survival Gear Bag , Magnesium Fire Starter + Whistle + Multi-function Saber Card, Combination Magnesium Fire Steel Fire Starter Whistle Multi-function Survival Wallet Tool Portable Outdoor Saber Card Knife Screw Wrench Opener, Explore Emergency Survival Tool Camper Survival Gear Set Stainless steel material,safe and healthy Holds 75ML of fluid when assembled, Measures 2.5-inch in diameter and 1-inch high when collapsed Fits in the palm of your hand, slips into your pocket or purse Keychain clip easily attaches to your backpack or belt loop Ideal for use while hiking, camping, hunting, traveling, outdoor activities, and concerts