The watertight Shaker offers a clean, neat and convenient way to mix, serve and store dressings, sauces and marinades. The top unscrews to reveal a wide opening ideal for adding a range of ingredients like oil, vinegar, mayonnaise, mustard, garlic, onions and spices. The Shaker is made of a BPA-free, break-resistant and dishwasher safe material. Plastic. Once ingredients are added, screw the top on and shake to quickly mix dressings with no spills. The top lever flips back for pouring and forward to seal. Use the Shaker to store leftover dressing and sauce right inside the fridge. Manufacturers lifetime against defects only guarantee.