Speedhook Survival Playing Cards 3.5in x 2.5in. 5in x 2.5in. Developed to help you in an outdoor emergency. Each regular playing card features a safety tip. Card information includes: Hearts (Breathing Bleeding Shock Hyperthermia Frostbites); Diamonds (Fractures Wounds Heat Exhaustion and Heat Stroke Heart Attack Bites and StingsBurns); Clubs (Preparation Campsites Shelters Fire Starting Signals); Spades (Water Food Becoming Unlost). Created By the US Military's Number One Survivalist Frank G. Heyl. Specifications for Speedhook Survival Playing Cards: Manufacturer: Speedhook Age Group: Adults Dimensions: 3.5 x 2.5 in Package Contents: Speedhook Survival Playing Cards Speedhook SURPC: Survival Playing Cards 3.5in x 2.5in