1. Important Safety Information
Before operating the ONETWOFIT Inversion Table, please read and understand all instructions and warnings. Failure to follow these instructions may result in serious injury.
- Consult a Physician: Always consult with a qualified medical professional before using an inversion table, especially if you have pre-existing medical conditions such as high blood pressure, heart disease, glaucoma, retinal detachment, bone weakness, or are pregnant.
- Weight and Height Limits: Do not exceed the maximum weight capacity of 330 lbs (150 kg). Ensure your height is within the adjustable range of 130 cm to 185 cm.
- Proper Assembly: Ensure all parts are correctly assembled and secured according to the instructions. Check all bolts and nuts before each use.
- Stable Surface: Use the inversion table on a flat, stable, non-slip surface.
- Secure Yourself: Always secure your ankles properly in the ankle supports and use the safety strap/seat belt to prevent accidental falls.
- Gradual Inversion: Begin with small inversion angles and gradually increase as your body adapts. Do not invert to a full 90 degrees until you are comfortable and confident.
- Supervision: Children and individuals with physical or cognitive limitations should not use the inversion table without adult supervision.
- Clear Area: Ensure the area around the inversion table is clear of obstructions to allow for full range of motion.
2. Product Overview
The ONETWOFIT Inversion Table OT257 is a robust and adjustable fitness device designed to provide spinal decompression and muscle relaxation through inversion therapy. Its ergonomic design ensures comfort and safety during use.

Image 2.1: Front view of the ONETWOFIT Inversion Table OT257, showcasing its sturdy frame and comfortable padding.
Key Features:
- Solid & Stable Construction: Features a heavy-duty 1.2 mm thick steel tube frame for durability and stability, supporting users up to 330 lbs (150 kg).
- Adjustable Height: Offers 16 height adjustment ranges from 130 cm to 185 cm to accommodate various user heights.
- Ergonomic Comfort: Equipped with a large foam backrest, soft sofa backrest, adjustable headrest pad, and an inflatable lumbar pad for enhanced comfort.
- Secure Ankle System: Includes a secure foot bar with adjustable ankle retention slots and padded supports for safe and comfortable ankle securing.
- Multiple Inversion Angles: Allows for free inversion adjustment from 0-90°, with an adjustable rear crossbar offering preset tilt positions at 20°, 40°, and 60°.
- Foldable Design: Easily folds for convenient storage, making it suitable for home use where space is a consideration.
- Anti-slip Stabilizers: Features anti-slip floor stabilizers for added safety and stability during use.

Image 2.2: The ONETWOFIT Inversion Table in its folded position, demonstrating its compact and space-saving design for home storage.
3. Setup and Assembly
Follow these steps to assemble and prepare your ONETWOFIT Inversion Table for use. Ensure all components are present before beginning.
3.1 Unpacking and Component Check
- Carefully remove all components from the packaging.
- Verify that all parts listed in the product manual (not provided here) are present and undamaged.
3.2 Assembly Steps
- Assemble the Main Frame: Connect the main support bars, ensuring all bolts are securely tightened. The frame is designed for triangular stability.
- Attach the Backrest: Secure the backrest to the main frame. Ensure the large foam backrest and soft sofa backrest are correctly positioned.
- Install Ankle Supports: Attach the foot bar and ankle retention system. Ensure the padded ankle supports are in place and can be adjusted.
- Adjust Height: Locate the height adjustment mechanism on the main frame. Adjust the height to match your body height. The table offers 16 adjustment ranges from 130 cm to 185 cm.

Image 3.1: Close-up view highlighting the 16 height adjustment settings, the comfortable backrest pad with inflatable lumbar support, and the adjustable ankle slots for secure positioning.
3.3 Initial Adjustments
- Height Setting: Adjust the main shaft to a height slightly taller than your actual height. This allows for easier balance and control during inversion.
- Ankle Lock: Test the ankle locking mechanism to ensure it securely holds your ankles without discomfort.
- Inflatable Lumbar Pad: Adjust the inflation of the lumbar pad to your preferred comfort level.
Video 3.1: This video demonstrates the setup, key features, and safe operation of the ONETWOFIT Inversion Table, including height adjustment, ankle securing, and inversion process. (Note: A specific video URL was not provided in the product data. This is a placeholder URL.)
4. Operating Instructions
Follow these steps for safe and effective use of your inversion table.
4.1 Getting Started
- Adjust Height: Ensure the height setting is appropriate for your body. Stand next to the table and adjust the main shaft so the top of the backrest is slightly above your head.
- Secure Ankles: Step onto the foot platform and place your ankles between the padded ankle supports. Securely lock the ankle retention system.
- Use Safety Strap: Fasten the safety strap or seat belt across your body to ensure additional security during inversion.

Image 4.1: A user lying on the inversion table, illustrating the product's adherence to the triangular stability principle and its secure, sturdy frame that supports up to 300 pounds.
4.2 Inverting
- Initiate Inversion: Slowly raise your arms over your head. The table will begin to tilt backward. Control the speed of inversion by moving your arms.
- Adjust Inversion Angle: The adjustable rear crossbar allows for 3 preset tilt positions (20°, 40°, 60°). For free inversion (0-90°), ensure the crossbar is disengaged or set to the maximum angle.
- Hold Position: Once at your desired inversion angle, relax and breathe deeply. Start with short durations (1-2 minutes) and gradually increase as you become more comfortable.

Image 4.2: A user in an inverted position, illustrating the benefits of using the inversion table, such as reducing back pain, relieving pressure, relaxing muscles, correcting posture, and increasing flexibility.
4.3 Returning Upright
- Slow Return: Slowly bring your arms back down towards your hips. The table will gradually return to an upright position.
- Disengage: Once fully upright, release the safety strap/seat belt and then the ankle locking mechanism.
- Step Off: Carefully step off the inversion table.

Image 4.3: The inversion table demonstrating its 360-degree training capability and the adjustable angle of the hand support, allowing for varied exercises and controlled inversion.
5. Maintenance
Regular maintenance ensures the longevity and safe operation of your inversion table.
- Cleaning: Wipe down the frame and padded surfaces with a damp cloth after each use. Use mild soap if necessary, and dry thoroughly. Avoid abrasive cleaners.
- Inspection: Periodically inspect all bolts, nuts, and moving parts for tightness and wear. Tighten any loose fasteners.
- Lubrication: Apply a small amount of silicone-based lubricant to any pivot points or moving parts that may develop friction, as needed.
- Storage: When not in use, fold the inversion table and store it in a dry, cool place away from direct sunlight and extreme temperatures.
6. Troubleshooting
If you encounter issues with your ONETWOFIT Inversion Table, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Table does not invert smoothly. | Incorrect height setting; loose bolts; friction in pivot points. | Adjust height setting to be slightly taller than you. Check and tighten all bolts. Lubricate pivot points. |
| Ankle supports feel uncomfortable or insecure. | Ankle supports not adjusted correctly; worn padding. | Ensure ankle slots are adjusted to fit snugly. Check padding for wear and replace if necessary. |
| Table feels unstable during use. | Used on an uneven surface; loose frame connections. | Move the table to a flat, stable surface. Check and tighten all frame bolts. |
| Difficulty returning to upright position. | Height setting too short; lack of arm movement. | Increase the height setting slightly. Use arm movements to assist in returning upright. |
7. Specifications
| Feature | Detail |
|---|---|
| Model | OT257 |
| Brand | ONETWOFIT |
| Material | Heavy-duty 1.2 mm thick steel tube frame |
| Weight Capacity | Up to 330 lbs (150 kg) |
| Adjustable Height Range | 130 cm to 185 cm (16 adjustment ranges) |
| Inversion Angles | Free adjustment (0-90°); Preset angles (20°, 40°, 60°) |
| Backrest | Large foam backrest, soft sofa backrest, adjustable headrest pad, inflatable lumbar pad |
| Ankle Support | Secure foot bar with adjustable padded ankle slots |
| Portability | Foldable design for space-saving storage |
| Dimensions (Approx. Unfolded) | Height: 152 cm, Length: 115 cm, Width: 79 cm |

Image 7.1: Diagram illustrating the approximate dimensions of the ONETWOFIT Inversion Table when fully assembled, including height (152cm), length (115cm), and width (79cm).
8. Warranty Information
For specific warranty details, please refer to the warranty card included with your product or contact ONETWOFIT customer support. Generally, ONETWOFIT products are covered by a limited manufacturer's warranty against defects in materials and workmanship.
9. Customer Support
If you have any questions, require assistance with assembly, or need troubleshooting help, please contact ONETWOFIT customer support through the following channels:
- Website: Visit the official ONETWOFIT website for FAQs and support resources.
- Email: Refer to your product packaging or warranty card for customer service email addresses.
- Phone: Contact numbers may be available on the official website or product documentation.
Please have your model number (OT257) and purchase date ready when contacting support.
