Package Content: You will receive 4pcs replacement stoppers, which specially deigned for Owala FreeSip stainless steel insulation water bottle; sufficient quantity for your daily use or replacement needs, or you can also share with your family or friends. Premium Materials: The replacement stoppers for Owala FreeSip are made of quality silicone, which is durable and reliable, BPA-free, both hand wash and dishwasher available, suitable for daily use. Practicality: With our replacement seal gaskets, it will protect your bottle from leaks or dirt, making it look like new, bringing you a good use experience. Compatibility: Specially designed for Owala FreeSip stainless steel water bottle, Owala FreeSip 25oz Clear Tritan plastic water bottle; compatible with Owala FreeSip 19oz 24oz 32oz 40oz stainless steel thermos bottle. NOTE: Our seal stoppers only fit for Owala FreeSip 19/24/32/40oz Stainless Steel Water Bottles and 25oz Clear Tritan plastic water bottle; not for any other brand or size. Please confirm it before buying.