![Piece for Trekking 700 Piece for Trekking 700](https://www.zefal.com/1829-large_default/silicone-mouth-piece-trekking-700.jpg)
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To change the nozzle fitted Zéfal Trekking 700 Bottle and extend the life of the product.
Product designed by our R&D department in France.
The commitment to quality is one of our major concerns. If you encounter any difficulties with this product, please contact our quality department.