The design of this product is brilliant also the quantity of the materials is good although the mouth is too narrow for the flow of smoke to be pulled out smoothly and with ease especially with use of a rubber tube as a connector within one week of usage I'm starting to get a pungent rubber smell as an aftertaste. A kind request if possible just fix the mouth pipe with a broader opening and without the use of rubber materials in the outlet kindly send me the design corrected cap of the bottle. Though the design is stealth, portable and airport compatible I don't think we can put it to a regular use on a long run given the health concerns and ease of pull due to the mouth piece design, constricted flow in the outlet and rubber materials involved.
