There is no need to worry about the quality of 750ml stainless steel vacuum flask,because it was purchased by Philip Morris International, whose website is www.pmi.com. 
Color: black,blue,white,silver.
Material: inner: stainless steel 304 + outer: stainless steel 201.
Capacity: 750ml.
Insulation: 12~24 hours.
Feel free to send us inquiries, when you have questions of the sport bottle.

Please do not hesitate to send us your art work, which will be made on stainless steel sport bottle.
Certification:FDA,LFGB