4 Container Sizes: 23.7oz (0.7Qt) / 57.5oz (1.8Qt) / 91.3oz (2.8Qt) / 118.3oz (3.7Qt) Stops when the optimal vacuum pressure is achieved Isolate the air, delay the oxidation of ingredients Crafted by food-safe materials that are BPA-free Suitable for use at temperatures between -0.4~176F