1. Product Overview
The EF ECOFLOW Silicone Foldable Travel Cup (Model SFC-B) is a versatile and portable hydration solution designed for outdoor activities such as camping, hiking, and general travel. Made from durable silicone, this cup features a unique foldable design, allowing it to be easily collapsed for compact storage and transport. Its large capacity makes it suitable for various hydration needs throughout the day.

Figure 1: The EF ECOFLOW Silicone Foldable Travel Cup in its collapsed, compact state, ready for storage or transport. This image shows the cup folded down, highlighting its space-saving design.
2. Setup and First Use
- Unpacking: Carefully remove the travel cup from its packaging. Inspect the cup for any signs of damage.
- Initial Cleaning: Before first use, thoroughly wash the cup with warm water and mild soap. Rinse thoroughly to remove any soap residue. As per product care instructions, this product is Hand Wash Only.
- Expanding the Cup: To expand the cup, gently pull the top and bottom sections apart until the cup reaches its full height and stable cylindrical shape. Ensure all creases are fully extended.
3. Operation
3.1 Filling and Drinking
- Filling: With the cup fully expanded, unscrew the lid. Fill the cup with your desired beverage, ensuring not to exceed the "MAX" fill line indicated on the side. The cup has a capacity of 1800 milliliters (approximately 60.9 ounces).
- Drinking: Securely screw the lid back onto the cup. The lid features a spout for drinking. Open the spout cover to drink.
- Handling: When the cup is full, especially with liquids, hold it firmly by the integrated handle or from the base to maintain stability and prevent accidental spills due to the flexible silicone material.

Figure 2: The EF ECOFLOW Silicone Foldable Travel Cup fully expanded, showing the measurement markings and handle. This view demonstrates the cup's full capacity and design for use.
3.2 Folding for Storage
- Emptying: Ensure the cup is completely empty and clean before folding.
- Collapsing: Gently push down on the top of the cup while holding the base. The silicone body will collapse into itself, reducing its height significantly.
- Securing: Once collapsed, you can use the attached strap or carabiner to secure it in its folded position for compact storage or attachment to a bag.

Figure 3: The EF ECOFLOW Silicone Foldable Travel Cup in its expanded state, viewed from the side, showcasing its robust handle and overall design.
4. Care and Maintenance
- Cleaning: Always hand wash the cup with warm, soapy water after each use. Pay special attention to the interior, lid, and spout to prevent residue buildup. Rinse thoroughly.
- Drying: Allow the cup to air dry completely before folding and storing. Ensure all parts, especially the interior, are dry to prevent mold or mildew growth.
- Storage: Store the folded cup in a clean, dry place away from direct sunlight and extreme temperatures.
- Material Care: The silicone material is durable but can be damaged by sharp objects or abrasive cleaners. Avoid using harsh chemicals or scouring pads.
5. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Cup feels unstable or "floppy" when full. | Flexible nature of silicone material. | Always hold the cup firmly by the integrated handle or support it from the base when it contains liquid to ensure stability. |
| Difficulty drinking from the spout. | Spout cover not fully open or straw (if included) not properly seated. | Ensure the spout cover is fully flipped open. If a straw is used, verify it is correctly inserted and sealed. |
| Unpleasant odor or mold growth inside the cup. | Incomplete drying or improper cleaning after use. | Thoroughly wash the cup with warm, soapy water after every use. Ensure it is completely air-dried before folding and storing. For persistent odors, a mixture of baking soda and water can be used for soaking, followed by thorough rinsing. |
6. Product Specifications
- Brand: EF ECOFLOW
- Model Name: Foldable Travel Cup
- Item Model Number: SFC-B
- Material: Silicone
- Color: Black
- Capacity: 1800 Milliliters (approx. 60.9 Ounces)
- Product Dimensions: 5"W x 8.4"H (Expanded)
- Special Feature: Foldable
- Product Care Instructions: Hand Wash Only
- Recommended Uses: Camping, Outdoor Activities
- Reusability: Reusable
- Included Components: Handle
- UPC: 842783125958
7. Warranty and Support
7.1 Warranty Information
This product is typically covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty terms, duration, and conditions, please refer to the warranty card included with your purchase or visit the official EF ECOFLOW website. Keep your proof of purchase for warranty claims.
7.2 Customer Support
For any questions, concerns, or technical assistance regarding your EF ECOFLOW Silicone Foldable Travel Cup, please contact EF ECOFLOW customer support. You can find contact information, including phone numbers and email addresses, on the official EF ECOFLOW website:
Visit the Official EF ECOFLOW Store on Amazon
Please have your product model number (SFC-B) and purchase details ready when contacting support.