NASA-funded research on next-generation spacesuits included the development of phase-change materials, which can absorb, hold and release heat to keep people comfortable. The technology is now found in blankets and comforters, bed sheets, dress shirts, T-shirts, undergarments, swaddling blankets and other products.
Read more: http://spinoff.nasa.gov/Spinoff2012/cg_3.html
Image credit: NASA