1. Please note: This product comes with a Christmas card, so you can give it as a gift to your friends or family at Christmas. 2. Package contents: You will receive 4 replacement stoppers, which are specifically designed for the Owala FreeSip stainless - steel insulated water bottle. The sufficient quantity can meet your daily use or replacement needs, and you can also share them with your family or friends. 3. High - quality materials: The replacement stoppers of Owala FreeSip are made of high - quality silicone. They are durable and reliable, BPA - free, and can be hand - washed or machine - washed, suitable for daily use. 4. Practicality: Using our replacement sealing gaskets can prevent the water bottle from leaking or getting dirty, making the water bottle look like new and bringing you a good user experience. 5. Compatibility: Specifically designed for the Owala FreeSip stainless - steel water bottle and the Owala FreeSip 25 - ounce transparent Tritan plastic water bottle; compatible with Owala FreeSip 19 - ounce, 24 - ounce, 32 - ounce, and 40 - ounce stainless - steel thermos flasks. Please note that our product is not sponsored, endorsed, or associated with its compatible brands (including Owala FreeSip). 6. Note: Our sealing stoppers are only suitable for Owala FreeSip 19/24/32/40 - ounce stainless - steel water bottles and 25 - ounce transparent Tritan plastic water bottles; they are not suitable for water bottles of any other brands or sizes. Please confirm before purchasing.