Heat-resistant glass storage containers, approximately 350g capacity. - Brand: Kalita, diameter 13cm, height 13cm - Brand: PYREX, diameter 13cm, height 9cm Glass, heat-resistant glass containers Thank you for viewing. This is a set of Kalita and PYREX storage containers. PYREX can be used for microwave cooking, is heat-resistant, resistant to rapid cooling, and doesn't transfer odors, making it very useful. Kalita can also be used for storing coffee and various other foods. I don't remember using them, so I'll consider them to be like new. Thank you.