Insulation type: Double wall; Temperature retention: Yes (Keeps liquid hot/cold upto 12 hrs); Leak proof: Yes Best Usage: Gym, Sports, School, OutdoorsWarranty: 1 year; Not covered in warranty: The warranty does not cover damages resulting from accidents, mishandling or tampering with the mechanism.Fabricated inside and outside in 18/8 quality stainless steel; its tough and durable.Materia type: Stainless Steel; No. of pieces: 1; Capacity: 750 ML; For any issues, contacts on:7827911075/76/77/78/79Pre-condition bottle with hot water if using for hot beverage and cold water if using for cold beverage; Use Mild Soap for cleaning the Flask and advised to be kept open when not in use to avoid odor Compare with