Introduction
This manual provides essential information for the proper use, care, and maintenance of your STANLEY Quencher H2.0 FlowState 40 oz Tumbler. Designed for maximum hydration, this tumbler features vacuum insulation to keep beverages cold for extended periods and an advanced FlowState lid for versatile drinking options. Please read these instructions carefully before first use to ensure optimal performance and longevity of your product.
Product Overview
The STANLEY Quencher H2.0 FlowState Tumbler is crafted from recycled stainless steel and includes several key components:
- Tumbler Body: The main insulated vessel for your beverages.
- FlowState Lid: A rotating cover with three positions: straw opening, drink opening, and full-cover top.
- Reusable Straw: Designed to fit securely in the straw opening.
- Ergonomic Handle: Features comfort-grip inserts for easy carrying.

Figure 1: STANLEY Quencher H2.0 FlowState 40 oz Tumbler. This image displays the complete tumbler assembly, including the main body, the FlowState lid, and the reusable straw inserted into the lid. The ergonomic handle is visible on the side of the tumbler.
Setup
- Unpack: Carefully remove all components from the packaging.
- Initial Cleaning: Before first use, wash the tumbler body, lid, and straw thoroughly with warm, soapy water. Rinse all parts completely. Refer to the "Maintenance and Care" section for detailed cleaning instructions.
- Assemble Lid: Ensure the silicone gasket on the lid is properly seated to prevent leaks.
- Insert Straw: If using the straw, insert it into the designated straw opening on the FlowState lid.
Operating Instructions
Follow these steps for optimal use of your Quencher H2.0 FlowState Tumbler:
- Filling: Remove the FlowState lid by twisting it counter-clockwise. Fill the tumbler with your desired cold or hot beverage. Do not overfill; leave space for the lid.
- Securing the Lid: Place the FlowState lid back onto the tumbler and twist clockwise until securely fastened. Ensure the lid is tight to prevent leaks and maintain insulation.
- Using the FlowState Lid: The lid features a rotating cover with three positions:
- Straw Opening: Rotate the cover to align with the straw opening. Insert the reusable straw. This position is designed to resist splashes.
- Drink Opening: Rotate the cover to align with the open drink spout for direct sipping.
- Full-Cover Top: Rotate the cover to completely close both openings for maximum spill resistance and temperature retention when not drinking.
- Carrying: Utilize the ergonomic handle for comfortable transport. The narrow base is designed to fit most car cup holders.
Important: While the FlowState lid offers spill resistance, it is not entirely leak-proof when inverted or shaken vigorously, especially with the straw inserted or drink opening exposed.
Maintenance and Care
Proper cleaning and care will extend the life and performance of your STANLEY Quencher H2.0 FlowState Tumbler.
- Dishwasher Safe: All components of the tumbler (body, lid, and straw) are machine washable. Place them on the top rack of your dishwasher for best results.
- Hand Washing: For thorough cleaning, especially for the lid's rotating mechanism, hand wash with warm, soapy water. Use a bottle brush for the tumbler interior and a straw brush for the straw.
- Drying: Allow all parts to air dry completely before reassembling or storing to prevent odor and mildew.
- Avoid Harsh Cleaners: Do not use bleach, chlorine-based cleaners, or abrasive scrubbers, as these can damage the finish and seals.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Liquid Leaks from Lid | Lid not securely fastened; silicone gasket improperly seated or damaged; lid not in full-cover position. | Ensure lid is twisted tightly. Check and reseat the silicone gasket. Rotate lid to full-cover position when not drinking. Avoid inverting or shaking vigorously. |
| Beverage Not Staying Cold/Hot | Lid not properly sealed; extreme external temperatures; prolonged exposure to direct sunlight. | Verify the lid is securely closed and the gasket is intact. Store in a shaded area. Pre-chill or pre-heat the tumbler with water before adding your beverage. |
| Unpleasant Odor/Taste | Incomplete cleaning; residue from previous beverages. | Thoroughly clean all components, especially the lid and straw, using warm soapy water and appropriate brushes. Ensure complete drying after washing. |
Specifications
- Model: Quencher H2.0 FlowState
- Capacity: 40 Ounces (approx. 1.18 Liters)
- Material: Recycled Stainless Steel (BPA-free)
- Insulation: Vacuum Insulated
- Lid Type: FlowState Rotating Cover (3 positions)
- Included Components: Tumbler, Lid, Reusable Straw
- Product Dimensions: 10 x 10 x 13.25 inches (approximate)
- Item Weight: 1.48 pounds (approx. 0.67 kg)
- Care Instructions: Machine Washable
- Recommended Use: Cold Drinks, Hot Drinks
Warranty and Support
For information regarding product warranty, customer support, or to register your product, please visit the official STANLEY website or contact their customer service department. Keep your purchase receipt as proof of purchase.
Official Website: www.stanley1913.com





