These blankets are fantastic! They come folded, so tiny. This summer my fiancé, brother, sister and I took a trip across the country. We were camping in Yellowstone and *thought* we had enough regular blankets with us. Luckily we grabbed them! My brother and sister both used and they were so happy. They're like light aluminum, make crackling noises when they move, but the four of us shared a tent and none of us bothered. The main thing is that they are warm! We then also used them to cover the bathroom floor to make it easier for us to get dressed after showering because the camping bathroom floor was dirty and soaked. Since then I've always kept one in my car and also packed it for an open air concert where I knew it was going to be cold and rainy. They are sooooo warm! Great product that I bought at a great price. I have to order more soon!