1. Introduction
The YUNCHI Waterproof Extra Wide Leg Cast Cover is designed to provide a watertight seal, protecting casts, bandages, wounds, and splints on the leg and foot during showering. This manual provides essential information for safe and effective use.

Figure 1: YUNCHI Waterproof Extra Wide Leg Cast Cover in use.
2. Safety Information
- Due to the potential risk of choking and suffocation, children should use this product under parental supervision.
- Made for therapeutic showering and bathing only. Not for sustained or vigorous water activities like diving.
- Keep away from fire and forbid drying from the dryer.
- Please air-dry in the shade between uses to maintain elasticity.
- Please use cautiously when walking on wet surfaces in case of slipperiness.
- Do not wear the cover for longer than 20 minutes to avoid cutting off blood circulation with extended wear.
3. Product Features
- Extra Large Size: Designed for overweight/plus-size adults, thicker large casts, splints, or medical fracture boots.
- Reusable & Durable Material: Made of medical-grade PVC bag, thick, waterproof, and durable. The silicone hole is upgraded with an anti-tear strip for repeated use.
- Comfortable & Safe Watertight Seal: Non-latex material that is skin-friendly and forms a watertight seal below the knee to prevent wound infections and keep casts dry.
- Easy to Put On and Off: Designed to stretch easily over large casts without touching the wounded part. Hard ring design allows for easy one-handed application and removal.
4. Product Dimensions & Sizing
This XL-Extra Wide model features a widened hard ring diameter of 9.5 inches and a center hole diameter of 3.7 inches. It fits calf circumferences from 13 to 28 inches. The overall length of the cover is 23 inches.

Figure 2: Product dimensions for the XL-Extra Wide Leg Cast Cover.
Note: This product is NOT SUITABLE FOR KNEE AND THIGH WOUNDS. Please measure your calf and cast size before purchasing to ensure proper fit.

Figure 3: Size comparison between Extra-wide (XL) and Standard (L) models.
5. Usage Instructions
5.1. Preparation
- Before initial use, perform a waterproof test after wearing the cast cover to ensure it does not leak before bathing or showering.
5.2. Applying the Cast Cover
- Expand the Silicone Hole: Gently stretch the silicone opening to create enough space for your leg.
- Slowly Extend Your Leg: Carefully insert your leg into the cover, guiding your foot and cast through the expanded silicone hole. Ensure the cast or bandage does not snag on the silicone.
- Adjust the Sealing Ring: Once your leg is fully inside, adjust the white sealing ring to fit snugly against your skin, just below the knee. This creates the watertight seal.

Figure 4: Expanding the silicone opening.

Figure 5: Slowly extending the leg into the cover.

Figure 6: Adjusting the sealing ring for a watertight fit.
5.3. During Use
- Safely Take a Bath or Shower: With the cast cover securely in place, you can now safely shower or bathe without wetting your cast or wound.
Video 1: Demonstration of the YUNCHI Waterproof Extra Wide Cast Cover in a shower, showing its effectiveness in keeping the leg dry.
Video 2: A user demonstrating the YUNCHI cast cover in the shower, highlighting its ability to keep the cast dry.
5.4. Removal and Drying
- Remove the Cover: Gently stretch the silicone opening again and slide the cover off your leg.
- Drying: Use the provided S-hook to hang the cast cover in the shower or a well-ventilated area to air-dry. Ensure it is completely dry before storing.

Figure 7: Hanging the cast cover to air-dry using the provided S-hook.
6. Care & Maintenance
- After each use, rinse the cast cover with clean water.
- Air-dry the cover in the shade. Avoid direct sunlight or using a dryer, as this can damage the material and reduce its elasticity.
- Store in a cool, dry place when not in use.
7. Important Considerations
- Always ensure the cast cover forms a complete watertight seal before entering the shower or bath.
- Do not submerge the entire leg and cover in water for extended periods.
- If you experience any discomfort, numbness, or changes in skin color while wearing the cover, remove it immediately.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | YUNCHI |
| Model Number | Extra-wide leg cast cover for adults |
| Size | XL-Extra wide |
| Calf Circumference Fit | 13 to 28 inches |
| Hard Ring Diameter | 9.5 inches |
| Center Hole Diameter | 3.7 inches |
| Product Dimensions | 11.81 x 10.24 x 1.18 inches; 11.68 ounces |
| Material | Medical-grade PVC bag, non-latex silicone |
| Specific Uses | Fracture, wounds, abrasions, rashes, burns, cuts |
| Use For | Ankle, Foot, Shins, Toes |
9. Warranty and Support
YUNCHI offers a 30-day refund policy for this product. For any inquiries or assistance, 24-hour online quick response after-sale service is available.