Brand : Lock And Lock Colour: Natural Material : Polypropylene Inclusive of : 1 Pc Capacity : 1200Ml 100% Air Tight 100% Liquid Tight Microwave Safe Dishwasher Safe BPA Free Product Description Airtight seal with great elasticity power locks tightly with hollow-center silicone.4-side of locking system makes it possible to be airtight due to equal pressure to all 4 sides. Durability is safe for change of temperature from -4°F to 210°F. So it can be used in the microwave, freezer and dishwasher.It is made up of superior raw material with durability and heat-resistant ability which is friendly to the human body.