Hi @benedetto

Pros:

• Unbreakable as it is made up of stainless steel
• Covers the very less space and one can take it anywhere easily
• Eliminates the odor and makes the things more pleasant
• Wonderful idea to reuse the bottle for the same purpose
• It actually prevents the protein shake from bacterial reactions
• No technicalities are involved, quite easy to use

Cons:

• None for it