Stanley The Iceflow Flip Straw 2.0 Tumbler 0.60L

Hello, thank you for your question about the inner chamber. The IceFlow Flip Straw 2.0 Tumbler is a product designed with Stanley's stainless steel body. However, the exact technical details regarding its internal chamber (whether it's a single piece, any signs of assembly, etc.) It is not specified in our product catalogue. You can review the detailed description on the product page to get exact information about this, or if your question continues, you can write to us in the My Seller Messages section. Glad to be of help 😊

Hello, the IceFlow series you are reviewing has a flip straw lid. This lid system is recommended by Stanley for "cold drinks" only, as its vacuum power can create pressure in hot drinks and pose a risk of scalding when drinking through a straw. For hot coffee use, we recommend choosing Stanley "Classic" or "Trigger Action" series in our store.