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Siren Cup
Siren Cup

Siren Cup


    Our Siren Cup is the most gorgeous way to say NO to single use plastic cups and help save our lakes, rivers & oceans!

    Features include:

    • 22 ounces
    • Made from the highest food grade stainless steel
    • Lead free
    • BPA free
    • Built in Silicone Silencer
    • Easy to clean
    • Double wall vacuum insulated to keep your beverage cold/hot for 12+ hours
    • Twist top
    • Reusable


    Mermaid Straw is a supporter of Plastic Bank®, an organization committed to stopping ocean plastic while improving the lives of collectors in vulnerable coastal communities. We proudly donate 1% of our gross sales to Plastic Bank every month. Learn more.

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    Customer Reviews

    Based on 69 reviews
    Maria G
    Love This Cup

    I love this cup because it's a great size and my drinks and ice stay nice and cold. I also love choosing which straw to use with it each day.

    We're glad to hear it, Maria! Thank you :)

    Jenna Griffin
    I’m obsessed.

    I absolutely LOVE my siren cup and use it every single day. I will say that I wish the website would be updated to say that you have to use the LONG straws for the cups. Even when you are on the cup product page, the default straw selection is the regular length, which is too short for the cup. If it does say it somewhere, I couldn’t find it. Anyway, I do really love the cup!

    Jenna, the straws linked on the product page are our Long straws, not regular!

    Nicole Marxer
    Excellent Products!

    I saw this company on Tiktok and finally ordered something. I ordered the siren cup along with some drinking straws & some smoothie straws. I was highly impressed! The cup is insulated so my water stays nice and cold and the straws are very well made, nice and strong. Each straw comes with a cleaning brush, which is really nice. I liked everything so well that I ordered again when they had their OOPS sale and bought more straws, silicone tips and a large cleaning brush. I'll definitely order from them again!

    Thank you so much for your support, Nicole! We appreciate it a ton :)

    Therese Mårnes

    Siren Cup

    Niccole warner
    I love this!!

    I use this cup everyday!! I love it with the straw as well!!