![Does anyone know why my Stanley thermos has this second set of threads? I can't find any reason online or a larger cup that I could order for it. I love this Does anyone know why my Stanley thermos has this second set of threads? I can't find any reason online or a larger cup that I could order for it. I love this](https://preview.redd.it/does-anyone-know-why-my-stanley-thermos-has-this-second-set-v0-shfd8usdgm2b1.jpg?width=640&crop=smart&auto=webp&s=073dabb7beb4e2ca371a16eac307729a12c1de3e)
Does anyone know why my Stanley thermos has this second set of threads? I can't find any reason online or a larger cup that I could order for it. I love this
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