Grela Stainless Steel Beer Growlers - 64 OZ. is made of BPA free and durable premium stainless steel. Designed with double wall beverage will be kept hot for up to 8 hours and cold for up to 16. Stainless steel lid with clasp and strip spill-proof and comfortable holding. Lightweight and durable, suitable for gym, exercise, office and outdoor activities. Rush 3 days available with rush charge upon request. Imprint drinkware only can be handwash. BPA FREE, FDA certified