Hiking, mountain biking, canoeing... No matter what, our double-walled stainless steel thermo bottle from the Gemstone collection will be your reliable companion. It keeps your drink hot or cold for hours due to it's vacuum insulation. The cap can also be used as a cup, which makes drinking even easier. The 0.5-liter Obsidian bottle is as resistant and durable as stone and timeless like a gem. FEATURES BPA FREE FOOD SAFE HAND WASH ONLY HOT AND COLD (FOR THE DURATION INDICATED) LEAK PROOF EASY CLEANING DOUBLE-WALLED 18/8 STAINLESS STEEL Like all other SIGG vacuum products, the bottles of the Gemstone collection are double-walled with both inside and outside bodies as well as a vacuum space between them. Gemstone products are copper coated on the inside. This guarantees insulation that is among the best you can get in an insulated bottle. 30% LIGHTER THAN STANDARD BOTTLES The flasks and food jars have an ultra-thin inside body which is made using a special spinning technology which is why it weighs 30% less. Thanks to high-precision welding, the vacuum gap inside the bottle has been reduced to a minimum. This results in a smaller bottle size compared to standard bottles with identical content. Measures   Height: Ø Weight 26.7 cm 7.6 cm 342 gr.