Rab Down Hut Slipper Features: Rab® Fluorocarbon Free Hydrophobic Down by Nikwax® 650 Fill Power R.D.S. Certified European Duck Down EVA Sole Unit for Comfort Pertex® Quantum Ripstop Water and Abrasion Resistant Outer Tough Nylon Sole with Grippy Silicone Traction Print Weight Approx 200g Down Hut Slipper