Ultralight. Ultrastrong. Ultimate Performance. Fundamentally, Spectra® fiber is a high molecular weight polyethylene material with a legacy of use as a ballistic materials for the military and police that’s now being used for technical textiles. But, it isn’t just something you put into a shirt, a pack, a jacket, or footwear. It’s decades of scientists engineering ways for you to go further and reach higher. It’s a single strand that’s strong enough to protect a soldier, but light enough to float on water. It’s as comfortable and light as it’s durable and strong. Spectra fiber is performance without compromise.