This is a TGI brand flask (Erlenmeyer flask), often seen on Instagram and other platforms. Originally a science lab supply, it is safe for food use (please wash it). It is resistant to acids and heat (can be used with boiling water). Material: Borosilicate glass (heat-resistant glass) Capacity: 500ml (approx. 700ml when filled to the brim) Size: | Diameter: Bottom 103mm, Top 58mm (circular) | Height: 180mm (excluding cork stopper) | Weight: 168g (excluding cork stopper) Comes with a cork stopper. TGI, as a company, went bankrupt and disappeared about 10 years ago. They were an established German manufacturer that produced products for research institutions and medical facilities. The glass does not deteriorate over time, but there may be some scratches on the printed areas. Please check the condition in the photos. Please note that recycled packaging materials may be used for shipping.