Stanley Thermos Not Keeping Drinks Hot – Fails to Maintain Temperature as Promised

I recently purchased a Stanley thermos, expecting high-quality performance from a globally recognized brand. However, I am extremely disappointed because the thermos does not retain heat as advertised. It claims to keep liquids hot for 6 hours, yet after just 2-3 hours, my drink is already cold.

I specifically chose Stanley for its reputation and reliability, but this product has completely failed to meet expectations. A thermos that fails to do its primary job is useless. I demand an immediate return or replacement. This is unacceptable for a premium brand, and I expect Stanley to resolve this issue promptly!