The bottle is made of innovative plastic materials, BPA free, odorless and soft to the touch to guarantee its characteristics Squeeze, all the result of over 3 years of study with university research centers.The bottle is also hygienic and easy to wash. To help our customers moisturize themselves and correctly sanitize their bottles, the FLYs are equipped with an increased 20% opening compared to the standard to facilitate the filling of the liquid or supplements and at the same time facilitate washing operations.The FLY can be comfortably washed in the dishwasher at 40 C and has an easily dismissed structure to allow both the bottle body and the cap with valve at the end of washing.To ensure even greater protection, we have created a comfortable protective protective cap, which you can easily screw to the bottle to protect the dust, mud, land and other external agents that can nest on the spout during L’I use. The cap is already included in the Fly MTB series.