0.5 l. Temperature safe glass. Double wall mug with tea bag buddy. Dishwasher safe. Heat resistant non-staining silicone. Double wall mug retains heat. Holds tea bag. Made of temperature safe borosilicate glass. Condensation free. Dishwasher and microwave safe. www.primulaproducts.com. Facebook: Like us on Facebook at www.facebook.com/PrimulaProducts and post your extraordinary moments. Visit us www.primulaproducts.com. BPA free. Made in China.