The canister has a double lid that keeps light and air out, allowing you to preserve the tea leaves fresh.
Dimensions:
Small 8.5 oz (250 ml)/3.6" D x 2.6" H
Large 15.3 oz (452 ml)/3.6" D x 4" H
Brand: 
Houseware brand in Tokyo, Japan. Kinto’s products are well balanced between usability and aesthetics.