Whistles+Blankets for Double Protection: Each emergency blanket comes with a survival whistle to keep you warm and safe when needed. 2X THICKER THAN AVERAGE: Made of Durable 26umPE material, it is twice thicker than Average emergency blankets. 20% LARGE THAN STANDARD: The size of each blanket is 83" x 60", which is larger than regular blankets and provides full body protection. Adventure essentials: Available in 2-packs and 4-packs, each blanket is only 3 ounces, so you can easily keep it in your car and backpack. Package Contents: Comes with 4 Emergency Blankets, 4 Whistles, 4 Waterproof Storage Pouchs, and 1 EVA case.