Signoraware Lock n Store Glass Containers (Square) Set/2 320 ml. not-on-disco-sale Question: Is this air tight

Question: Is this air tight

Portion Control

Leak-proof and durable

The attached strap makes it simple to carry the bottle by hand or hang it from a bag for hands-free convenience

Signoraware Lock n Store Glass Containers (Square) Set/2 320 ml. not-on-disco-sale Question: Is this air tightHeat resistant up to 420 Celsius, stackable for convenient storage 100 percent microwave safe and 100% Borosilicate Glass , oven, dishwasher and freezer proof Gives your kitchen a modern and stylish look with 100 percent food grade and microwave safe, B. P. A free Modern look, see through glass like look, exeptional gift idea Color: Clear, Material: Glass