Introduction
Thank you for choosing the STANLEY Quencher H2.0 FlowState Tumbler. This manual provides essential information for the proper setup, operation, maintenance, and care of your 64 oz vacuum-insulated tumbler. Designed for durability and performance, this tumbler keeps your beverages at their desired temperature for extended periods.
Product Overview
The STANLEY Quencher H2.0 FlowState Tumbler is engineered with advanced features for optimal hydration and convenience.
- Double-Wall Vacuum Insulation: Keeps drinks cold, iced, or hot for hours.
- FlowState Lid: Features a rotating cover with three positions: a splash-resistant straw opening with a seal, a drink opening, and a full-cover top for leak resistance.
- Reusable Straw: Included for convenient sipping.
- Ergonomic Comfort-Grip Handle: Designed for easy carrying.
- Durable Construction: Made from 90% recycled BPA-free stainless steel.
- Dishwasher Safe: For easy cleaning.

Image shows the STANLEY Quencher H2.0 FlowState 64 oz Tumbler in Charcoal, featuring its ergonomic handle, FlowState lid, and reusable straw.
Setup
- Unpack: Carefully remove all components from the packaging.
- Initial Cleaning: Before first use, wash the tumbler, lid, and straw thoroughly with warm, soapy water or place them in a dishwasher. Rinse all parts completely.
- Assemble Lid: Ensure the silicone gasket is properly seated in the lid for a secure, leak-resistant seal.
Operating Instructions
Filling Your Tumbler
- Remove the lid by twisting counter-clockwise and lifting.
- Fill the tumbler with your desired beverage. Do not overfill; leave space for the lid.
- Replace the lid, ensuring it is securely twisted clockwise until snug.
Using the FlowState Lid
The FlowState lid offers three positions for versatile drinking:
- Straw Opening: Rotate the lid cover to align with the straw opening. Insert the reusable straw. The seal around the straw helps resist splashes.
- Drink Opening: Rotate the lid cover to align with the open sip-through slot for direct drinking.
- Full-Cover Top: Rotate the lid cover to fully close both openings for enhanced leak resistance during transport.
Temperature Retention
- For best results with hot beverages, pre-heat the tumbler with hot water for 5 minutes before filling.
- For best results with cold beverages, pre-chill the tumbler with cold water or ice for 5 minutes before filling.
Car Cup Holder Compatibility
The 64 oz tumbler has a wider base and may not fit all standard car cup holders. Please verify compatibility with your vehicle's cup holder dimensions.
Maintenance and Cleaning
Regular cleaning ensures the longevity and hygiene of your STANLEY tumbler.
- Dishwasher Safe: All components (tumbler, lid, and straw) are top-rack dishwasher safe.
- Hand Washing: For hand washing, use warm water and mild dish soap. A bottle brush can be helpful for cleaning the interior of the tumbler. Use a small brush for the straw and lid components.
- Drying: Allow all parts to air dry completely before reassembling or storing to prevent odor and mildew.
- Deep Cleaning: For stubborn stains or odors, a mixture of baking soda and warm water can be used. Let it sit for a few hours or overnight, then rinse thoroughly.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Liquid leaking from lid | Lid not securely tightened; gasket improperly seated; lid cover not in full-cover position. | Ensure lid is twisted on tightly. Check that the silicone gasket is correctly positioned. Rotate the FlowState lid cover to the full-cover position for maximum leak resistance. |
| Beverage not staying hot/cold | Lid not sealed properly; extreme ambient temperatures; tumbler not pre-heated/chilled. | Verify lid is securely closed. Pre-heat or pre-chill the tumbler before filling. Avoid leaving the tumbler in direct sunlight or extreme cold for extended periods. |
| Metallic taste or odor | Incomplete cleaning; residue from previous beverages. | Wash all components thoroughly. For persistent odors, use a baking soda and water solution for deep cleaning. |
Specifications
- Brand: STANLEY
- Model: FlowState Tumbler
- Capacity: 64 Ounce (approximately 1.9 Liters)
- Material: 90% Recycled BPA-Free Stainless Steel
- Color: Charcoal
- Insulation: Double-Wall Vacuum Insulated
- Product Dimensions: 5.3"W x 12"H
- Item Weight: Approximately 1 pound (16 ounces)
- Care Instructions: Dishwasher Safe
- Included Components: Tumbler, FlowState Lid, Reusable Straw
- UPC: 041604380693
Warranty and Support
STANLEY products are built to last. For information regarding product warranty, returns, or customer support, please refer to the official STANLEY website or contact their customer service directly. You can also visit the STANLEY Brand Store on Amazon for additional resources.





