RAMBLER INSULATED FOOD JAR: The Insulated Food Jars are designed to be used with all food and liquid types. Help you stay fuelled wherever your adventure takes you. Whether it's your morning oats or midday salsa snack. MAGVENT LID: 100% leakproof MagVent lid allows you to throw it in your bag without a worry. When properly sealed, the two-piece lid vents out hot air as it opens and comes apart for easy cleaning. To remove fully, just keep turning past this point until the lid comes off. 18/8 STAINLESS STEEL & DISHWASHER SAFE: Made with kitchen-grade stainless steel, so it's puncture- and rust-resistant. They can not be used in the microwave, as fire or personal injury can occur. Everything from the jar itself to the two- piece MagVent lid can go right in the dishwasher. Because no one needs more work to do. DOUBLE-WALL VACUUM INSULATED: Rambler Insulated Food Jars are double-wall vacuum insulated. Keeps cold food cold and hot food hot until it's time to eat. NOTE: Rambler Insulated Food Jars are food-safe, BPA-free. Do not use the Insulated Food Jar with carbonated, dairy, or fermenting food or beverages. Over time, these items can cause pressure to build inside the container. If pressure buildup occurs, the cap can be difficult to remove or forcefully eject and cause injury.