Stanley Transit Fliptop Mug - 350ml

No, hand washing is recommended to maintain the integrity of the vacuum insulation and the finish of the mug. Dishwashers can damage the insulation and lid components.

The mug is designed to keep drinks hot for up to 6 hours and cold for up to 10 hours, thanks to its featherweight spun-steel insulation.

It means the mug uses advanced insulation technology that is significantly lighter than traditional stainless steel construction for similar capacity and performance, making it easier to carry.

It is not recommended to use this mug for carbonated beverages, as the pressure buildup can be dangerous and may cause the lid to leak or burst open.

The fliptop lid can be disassembled for cleaning. Wash all parts with warm, soapy water and ensure they are completely dry before reassembling. A small brush can help reach tight spots.

Stanley typically offers a lifetime warranty on their products against manufacturing defects. Please refer to the specific warranty documentation included with your purchase for details.

The silicone used is food-grade and designed not to impart any taste or odor to your beverages. It is primarily for grip and noise reduction.

Ensure the lid is tightly sealed. Hand wash only and allow to dry completely. Avoid pre-chilling or pre-heating the mug, as this can sometimes affect initial performance. Check for any visible damage to the vacuum seal.

Ensure the lid is properly aligned and fully assembled. Sometimes, residue can build up; clean the lid components thoroughly with warm, soapy water and dry them completely. If stiffness persists, a small amount of food-grade lubricant might help, but ensure it's washed off before use.

Verify that the lid is screwed on tightly and correctly. Check the silicone seal on the lid for any damage or debris. Ensure the fliptop mechanism is fully closed. Do not overfill the mug; leave adequate space below the threads.

This is rare with vacuum-insulated products. If it occurs, it may indicate a compromised vacuum seal. Contact customer support if the issue persists and the mug is under warranty.