tested by TÜV, SGS, Intertek • absolutely tasteless and odorless. • BPA free. • Not indestructible. • Resistant from -10 ° C to 50 ° C. • freezable. • hand washing recommended to increase the life of the product. • do not use dryers. • do not for microwaves. • alcohol resistant, <2 hours. • not for aniseed drinks. • not for strong alcohol, such as whiskey ... etc. The following maydiscolor the product or make it opaque in the long term: • Leave the glasses for an extended period of time at high temperatures and high humidity • Incorrect dosage of detergent • Use of a detergent containing aluminum or metal protection. • Dairy products, coffee, cocoa, tea and other beverages can leave a circle on the glass if you leave it overnight. Wash the glass with warm soapy water immediately after use, hand wash or use our cleaning product. Dust regularly. • The use of anise-based drinks (such as Pernod, Ricard, Raki or Ouzo). • The use of drinks with ahigh ester content. Esters are a natural product often found for example herbal teas.