Synthetic Skincover Photo courtesy of Interbike Cycling gloves made of a combination of natural and synthetic materials improve performance. Cycling gloves are essential for the hard rider. But solid leather gloves are not the way to go - cyclists want breathability and flexibility in a glove. Through the addition of polymers, gloves can be made which meet these expectations and are lighter, too. The glove shown has a spandex back that is breathable and stretches to fit the rider's hand. The knuckles are covered with neoprene to offer additional protection and stretch. What makes spandex and Neoprene useful material? Spandex is an elastomeric fiber - it is able to stretch at least 100% and snap back to original shape (like natural rubber). In fact, spandex can be stretched to over 500% without breaking (though it may not return to original shape). As a material, it is stronger and more durable than rubber. This flexability and durability is useful in activewear and exercise clothing, where the activity puts strain on the clothes. Neoprene is also a synthetic rubber. It has some stretch characteristics, but it is especially known for its strength. Because of this durability, neoprene is used in industrial and commercial applications, not just clothing - you'll find it in power transmission belts, cellular phones, auto hoses, wire and cable jacketing, and bridge pads. Site related questions or comments? Contact crc@tms.org