Revolutionary aerospatial aluminum alloy, which combines Magnesium, Silicium, and Titanium: a refined mixture of lightness, strength, and elasticity. The Grilamid TR 55/90 LX, high quality thermoplastic material, is shock resistant, lightweight and non-allergenic. Edge Eyewear makes the most of this rugged, resilient frame material in our advanced sport sunglasses for stability and durability. Sunglass slippage due to sweat is annoying and can be dangerous. Edge Eyewear by Wolf Peak employs Hydrophilic Megol in the construction of our Nose Pads and Temple Ends to ensure a consistently snug fit despite rigorous activity. Megol is a moisture absorbing material that becomes sticky when in contact with sweat, ensuring a secure fit to your face.