Kinto 21091.0
Kinto Day Off Tumbler Instruction Manual
Model: 21091.0
Product Overview
The Kinto Day Off Tumbler is designed for individuals seeking relaxation and an active lifestyle. Its vacuum double-walled construction ensures your beverages maintain their temperature and flavor for extended periods. The tumbler features an easy-grip rounded handle, making it convenient for carrying during walks or long trips.

Image: The Kinto Day Off Tumbler in white, showcasing its sleek design and integrated handle.
Setup and Initial Use
- Unpacking: Carefully remove all components from the packaging. Ensure all parts are present: tumbler body, lid, and silicone gaskets.
- Initial Cleaning: Before first use, wash all parts thoroughly with warm water and mild dish soap. Rinse completely and allow to air dry.
- Gasket Installation: Ensure the silicone gaskets are correctly installed. The larger gasket fits around the drinking spout, and the smaller gasket fits inside the top lid. The side with the slit should face towards the container. This is crucial for preventing leaks.

Image: A visual guide demonstrating the proper placement of the silicone gaskets on the lid and drinking spout to ensure a leak-proof seal.
Operating Instructions
- Filling: Fill the tumbler with your desired beverage. Do not overfill; leave a small space from the top to allow for the lid.
- Securing the Lid: Screw the lid on tightly. Ensure it is aligned properly to prevent leaks. The design allows for comfortable drinking from any angle (360 degrees) without protrusions.
- Temperature Retention: The vacuum double-walled construction provides excellent insulation. For best results with hot beverages, pre-heat the tumbler with hot water for a few minutes before filling. For cold beverages, pre-chill with cold water.

Image: A close-up of a person drinking from the tumbler, illustrating the smooth, protrusion-free rim designed for a comfortable drinking experience.

Image: The Kinto Day Off Tumbler placed outdoors, demonstrating its portability and suitability for daily use or travel.
Maintenance and Care
- Daily Cleaning: After each use, disassemble the lid and gaskets. Wash all parts with warm water and mild dish soap. Use a soft brush for thorough cleaning if necessary.
- Drying: Ensure all parts are completely dry before reassembling and storing to prevent odors or mold.
- Avoid Harsh Cleaners: Do not use abrasive cleaners, bleach, or chlorine-based products, as these can damage the stainless steel and coating.
- Dishwasher Safety: The tumbler is not suitable for microwave, oven, or dishwasher use. Hand washing is recommended to preserve the finish and integrity of the materials.
- Storage: Store the tumbler with the lid slightly ajar to allow air circulation and prevent odors.

Image: The tumbler disassembled into its main components, illustrating how it can be taken apart for comprehensive cleaning.

Image: A detailed view of the tumbler's durable 18-8 stainless steel interior and matte powder-coated exterior, designed for longevity and resistance to scratches.
Troubleshooting
- Leakage:
If the tumbler leaks, ensure the lid is screwed on tightly and correctly aligned. Check that both silicone gaskets are properly seated in their respective grooves and are not twisted or damaged. Refer to the "Setup and Initial Use" section for correct gasket installation.
- Poor Temperature Retention:
If beverages do not stay hot or cold for the expected duration, ensure the lid is securely closed. Verify that the gaskets are intact and properly installed, as a compromised seal can affect insulation. Pre-heating or pre-chilling the tumbler before filling can also improve performance.
- Unpleasant Odor:
If an odor develops, thoroughly clean all parts, especially the gaskets, with warm soapy water. A solution of baking soda and water can help neutralize persistent odors. Ensure all parts are completely dry before storage.
Specifications
| Model Number | 21091.0 |
| Capacity | 16.9 fl oz (500 ml) |
| Dimensions | φ2.9 x H8.9 inches (74 x 226 mm) |
| Material | Stainless Steel (powder coated), Polypropylene, Silicone |
| Heat Retention | Over 148°F (69°C) for 6 hours |
| Cold Retention | Less than 15.4°F (7°C) for 6 hours |
| Country of Origin | China |

Image: A diagram illustrating the dimensions of the tumbler and icons indicating that it is not suitable for microwave, oven, dishwasher, or dryer.

Image: A cutaway view of the tumbler, highlighting its vacuum double-walled construction which prevents heat convection and provides high insulation performance.
Warranty and Support
Specific warranty information for the Kinto Day Off Tumbler is not provided in this manual. For details regarding warranty coverage, claims, or product support, please refer to the product packaging or contact Kinto customer service directly through their official website or the retailer from whom the product was purchased.
For general inquiries or further assistance, please visit the official Kinto website or contact your local distributor.
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