OrthoTape Cast Padding – 4 Inch | 1 Roll × 4 Yards
Professional-grade 4-inch cast padding roll — synthetic polyester, 4 yards. The standard width for short arm, ankle, and short leg casting. Also used as undercast padding under athletic braces, shin guards, and protective gear for added cushioning and comfort during sports.
🚚 Fast Shipping: Ships same day from our Ridgeland, SC warehouse. Most US orders arrive in 1–3 business days.
Cotton Cast Padding vs. Synthetic Cast Padding — Why Clinics Are Making the Switch
For decades, cotton cast padding was the standard in orthopedic casting. It was soft, widely available, and familiar. But cotton has a fundamental problem: it absorbs moisture and holds onto it. Sweat from the patient's skin soaks into the cotton fibers and stays there — creating a warm, damp environment under the cast that leads to odor, skin irritation, and padding breakdown over the wear period.
Synthetic cast padding was developed specifically to solve this problem. Made from polyester fibers engineered to wick moisture away from the skin rather than absorb it, synthetic padding keeps the cast environment significantly cooler and drier than cotton — especially important during extended wear or in warmer climates.
| Property |
Cotton Cast Padding |
OrthoTape Synthetic Padding |
| Moisture handling |
Absorbs & retains sweat |
Wicks moisture away from skin |
| Dry rate |
Slow — stays damp for hours |
Fast — dries significantly quicker |
| Cast temperature |
Warmer — trapped moisture holds heat |
Cooler — moisture wicking reduces heat buildup |
| Odor |
Higher risk from retained moisture |
Reduced — less moisture retention |
| Skin irritation |
Higher risk from prolonged dampness |
Lower risk — drier environment under cast |
| Tear resistance |
Can bunch and mat during application |
Tear-resistant — consistent application |
| Weight |
Heavier |
Lightweight |
| Fiberglass compatibility |
Designed for plaster systems |
Optimized for modern fiberglass casting |
Cast Padding for Sports & Athletic Use
Beyond orthopedic casting, cast padding for sports has become a popular application. Athletic trainers and sports medicine staff use 4-inch cast padding rolls as extra cushioning under shin guards, ankle braces, knee sleeves, and protective tape. The 4-inch width provides excellent coverage for ankles, lower legs, and larger joints. Synthetic cast padding is preferred for sports use because it wicks moisture during activity, dries faster between uses, and stays lighter than cotton alternatives.
⚠️ Synthetic Padding ≠ Waterproof Cast Liner
Synthetic cast padding handles moisture better than cotton but is not a waterproof cast liner. For patients requiring a fully waterproof cast, a dedicated waterproof liner (such as AquaCast) must be used.
Product Specifications
| Specification |
Detail |
| SKU |
OT-CP401 |
| Width |
4 inches (10.2 cm) |
| Length per Roll |
4 yards (3.7 m) |
| Quantity |
1 roll |
| Material |
Synthetic polyester cast padding |
| Intended Use |
Under fiberglass or plaster orthopedic casts; athletic underpadding |
| Typical Applications |
Short arm, ankle, short leg casting; sports & athletic padding |
✅ FSA & HSA Eligible: Cast padding is eligible for purchase with FSA and HSA funds. Check with your plan administrator for details.
Frequently Asked Questions
What is cast padding used for?
Cast padding (also called undercast padding) is applied directly over the skin and stockinette before fiberglass or plaster casting tape is applied. It protects bony prominences, cushions the skin, and provides a comfortable interface between the patient and the hard cast shell. It is also used in sports as extra cushioning under braces and protective equipment.
Is synthetic cast padding better than cotton cast padding?
For most modern orthopedic casting, yes. Synthetic polyester padding wicks moisture away from the skin rather than absorbing it like cotton does. This results in a cooler, drier environment under the cast, faster dry times after sweating, reduced odor, and lower risk of skin irritation. Cotton cast padding was the standard for decades but has largely been replaced by synthetic padding in modern clinical practice.
Is OrthoTape cast padding waterproof?
No. OrthoTape synthetic cast padding handles moisture better than cotton but is not a waterproof cast liner. For a waterproof cast, a dedicated waterproof liner (such as AquaCast) must be used as part of a complete waterproof casting system.
Can cast padding be used for sports?
Yes. 4-inch cast padding rolls are commonly used in sports and athletic training as extra cushioning under shin guards, ankle braces, knee sleeves, and protective tape. Synthetic cast padding is preferred for sports use because it wicks moisture during activity, dries faster, and stays lighter than cotton alternatives.
How much cast padding do I need for a short leg or ankle cast?
For most short leg and ankle casts, two to three 4-yard rolls of 4-inch padding is typical. Apply with 50% overlap and add extra layers over bony prominences such as the malleoli and heel.
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Authorized Dealer: OrthoTape is an authorized distributor of professional orthopedic casting supplies. | FSA/HSA Eligible. | Returns: 30-day return window; customer is responsible for return shipping costs. | Medical Disclaimer: This product should be applied by a trained medical professional. Always consult a licensed physician for diagnosis and treatment decisions.
