Original EcoStretch Neckwear Midnight Blue: The most versatile, multifunctional and seamless product for year-round activities is now even more comfortable offering 4-way stretch technology and a 100% recycled fabric made from PET bottles. The Original EcoStretch is ideal for any outdoor activity providing great protection from the elements. Excellent moisture management makes it the perfect tubular for running, hiking or skiing. fits all. Designed for adults.