This Nissan Stainless Backpack Tumbler comes complete with 2 screw on attachments, one for sipping, and the other incoporates a built-in stainless steel strainer for steeping teas and such. Either attachment screws on, and in addition, a seperate lid screws onto either attachment to keep the bottle leak proof.
If youre a tea drinker, there are actually two ways to use the bottle. The tea can be placed in the strainer, used like a tea ball, and removed when ready to drink, or mix the tea directly in with your hot water, and the strainer keeps the leaves in the bottle, and out of your mouth when sipping. If youre a coffee drinker, forget the strainer, and use just the sipping lid instead. When used like a tea ball, leave the closure lid screwed onto the strainer attachment, unscrew the entire assembly, and it can be turned completely upside-down, and while sitting flat, it will not leak or drip. Nice design!
We havent tried using the screen attachment as a coffee ball, the screen is a little coarse for coffee, and you would have to have a pretty chunky grind to keep your coffee from getting muddy. An excellent leak-proof solution while on the road! Hot 6 hours, Cold 10 hours.
All of the double wall stainless steel lined thermos vacuumware you will find at BaldMountainCoffee.com, are top of the line units. We do not carry products that are insulated with foam. Although Thermos does manufacture other, less expensive lines of products that do not include their TherMax™ technology, we carry only only Nissan Thermos products that DO include TherMax™ technology, as we feel they are far superior to what else is offered.