Spectra Fabric is like something out of a Spiderman comic. It's one of the worlds lightest and strongest fabrics. Gram for gram is 10 x stronger than steel and is used in bullet proof vests and even armoured vehicles so its seriously tough stuff. The guys at Comfy Outdoor Garment
have used it to create these super light and tough Sachoche bags for carrying your essentials round town or up a mountain.