Berlinger Haus Professional Thick Walled Flask - 750mlVersatile Lifestyles Use your tumbler in any number of activities and situations! 750ml flask can be taken just about anywhere be that the office, gym, school, or out and about fishing or hiking. You can do all of this with the knowledge that, with the sweat proof insulation and non leaking screw lid, there will be no leaks or wet spots left behind! The base fits snugly into most car cup holders, and the robust natural thick walled and stainless steel