Introduction
This manual provides detailed instructions for the proper use and care of your 2-piece replacement straw set, designed specifically for the Thermos Funtainer 12 Ounce Bottle Model F401. This set includes two silicone sipper straws and two straw stems, made from BPA-free and food-grade materials to ensure safety and durability.
Setup and Installation
Follow these steps to install the replacement straws into your Thermos Funtainer F401 bottle:
- Remove Old Straws: Carefully remove the existing straws from your Thermos Funtainer bottle.
- Insert New Sipper Straws: Take one of the new silicone sipper straws and insert it firmly into the top opening of a straw stem.
- Secure Fit: Ensure the sipper straw is securely fitted onto the straw stem to prevent leaks and ensure proper suction.
- Install into Bottle: Insert the assembled straw (sipper straw and stem) into the lid of your Thermos Funtainer F401 bottle. Make sure it clicks into place or is otherwise firmly seated.
- Prepare for Use: Fill the bottle with your desired beverage.


Operating Instructions
Once installed, the replacement straws function identically to the original Thermos Funtainer straws. Simply open the bottle's lid and sip from the silicone sipper. Ensure the lid is properly closed when not in use to prevent spills.
Care and Maintenance
Proper care will extend the life of your replacement straws:
- Initial Cleaning: Before first use, wash all parts with warm soapy water.
- Regular Cleaning: After each use, disassemble the straw set (sipper and stem) and wash thoroughly with warm soapy water. A straw brush (not included) can be used to clean the inside of the straw stem.
- Drying: Ensure all parts are completely dry before reassembling or storing. Keep dry when not in use.
- Storage: Store in a clean, dry place.
- Dishwasher Safe: The silicone sipper straws and plastic stems are generally top-rack dishwasher safe, but hand washing is recommended for longevity.
Troubleshooting
- Issue: Liquid is difficult to sip or no liquid comes out.
Possible Causes & Solutions:
- Improper Assembly: Ensure the silicone sipper straw is fully and securely inserted into the straw stem.
- Air Leak: Check that the straw assembly is properly seated in the bottle lid and that the lid is tightly closed.
- Straw Blockage: Inspect the straw for any blockages. Clean thoroughly if necessary.
- Issue: Leaking from the straw or lid area.
Possible Causes & Solutions:
- Loose Fit: Verify that the sipper straw is tightly connected to the stem and that the entire assembly is firmly installed in the bottle lid.
- Damaged Parts: Inspect the silicone sipper and plastic stem for any tears, cracks, or damage. Replace if damaged.
- Lid Seal: Ensure the bottle lid itself is properly sealed to the bottle.
Specifications
| Feature | Detail |
|---|---|
| Material | Food-grade Silicone (sipper), High-quality durable plastic (stem) |
| Safety | BPA-Free, None (High-concerned chemical) |
| Compatibility | Thermos Funtainer 12 Ounce Bottle Model F401 (Bottle with a carry loop on the lid) |
| Package Contents | 2 x Silicone Sipper Straws, 2 x Straw Stems |
| Sipper Straw Length | Approximately 12.7 cm (5 inches) |
| Straw Stem Length | Approximately 6 cm (2.3 inches) |
| Sipper Diameter | Approximately 6mm / 8mm (at widest point) |

User Tips
- For optimal performance, ensure the sipper straw is fully pushed onto the stem. A tight seal is crucial for proper suction.
- Regularly check the silicone sipper for any signs of wear or damage, especially if used by children, to prevent choking hazards.
- Consider having a spare set of replacement straws for convenience, especially if the bottle is used frequently.
Warnings
- CHOKING HAZARD: Small parts. Not for children under 3 years. Adult supervision is recommended for all users.
- Always inspect the straw components before each use. Discard and replace if any part is damaged or shows signs of wear.
Warranty and Support
For any issues or questions regarding your replacement straws, please contact our store support. We are committed to providing assistance and ensuring your satisfaction.
A detailed user manual in PDF format is also available for download: View User Manual (PDF)





