The Ethnocare Underlay TT Closed is a transtibial sweat-management sleeve designed to help control moisture, heat and perspiration inside a below-knee prosthetic socket. Worn underneath the prosthetic liner, the Underlay uses Ethnocare’s proprietary moisture-management knit to help move sweat away from the residual limb, supporting a drier and more comfortable prosthetic interface. The Closed version provides the same moisture-management and antimicrobial performance as the open design, but with a sealed distal end. Ethnocare notes that this configuration can be particularly suitable for users with more bulbous residual-limb shapes or where clinicians want to avoid any effect from an open distal edge on fit or skin contact. Key Features Helps manage sweat, heat and moisture inside the prosthetic socket Worn underneath the prosthetic liner Closed distal end for full residual-limb coverage Proprietary moisture-management knit Antimicrobial performance Helps reduce moisture-related slippage and discomfort Supports a more stable and comfortable socket environment Particularly useful for active users and hot or humid climates Passive textile solution requiring no electronics or adjustment Available for low, moderate and high activity users Why Choose the Closed Version? The sealed distal design can be advantageous for users with bulbous residual limbs and for fittings where maintaining continuous material coverage at the distal end is preferred. It offers prosthetists an alternative to the Underlay TT Open while retaining the same core objective: helping keep the residual limb drier and improving comfort throughout the day. Prosthetic Compatibility The Ethnocare Underlay TT Closed is designed for transtibial / below-knee amputees and is compatible with: Distal fixation Suspension sleeves Passive vacuum Active / elevated vacuum It is suitable for K1 to K4 activity levels, from low-activity users through to highly active amputees. Materials Proprietary knit Available Circumference Sizes 23 28 35 Available Lengths Short (SH): 14–20 cm Long (LG): 28–32 cm Ideal for Hot Climates and Active Users Excessive perspiration inside a prosthetic liner can contribute to slipping, friction, odour, skin irritation and reduced socket stability. The Ethnocare Underlay TT Closed provides a simple way to manage moisture without altering the prosthetic socket or suspension system. For amputees living in hot and humid environments, working outdoors, exercising regularly or wearing their prosthesis for long periods, the Underlay TT Closed can help create a drier, more comfortable and more secure prosthetic interface.

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The Ethnocare Underlay TT Open is a transtibial sweat-management sleeve designed to help control humidity, perspiration, heat and odour inside a below-knee prosthetic socket. Worn under the prosthetic liner, the Underlay uses a proprietary moisture-management knit to help move sweat away from the residual limb and improve comfort during everyday wear, exercise and hot-weather conditions. Its open-ended design allows the liner to remain in direct contact with the skin where required for suspension, while the Underlay extends beyond the liner to encourage airflow and natural evaporation. Key Features Helps manage sweat, humidity, heat and odour inside the prosthetic socket Worn underneath the prosthetic liner Open-ended design maintains essential liner-to-skin contact Extends beyond the liner to support airflow and evaporation Helps keep the residual limb and liner drier during prolonged wear Can help reduce moisture-related slippage and discomfort Particularly useful for active users and people living in hot or humid climates Passive textile-based solution with no pumps, electronics or adjustment required Suitable for low, moderate and high activity levels Prosthetic Compatibility The Underlay TT Open is designed for transtibial / below-knee prosthetic users and is compatible with several common suspension methods, including: Distal fixation Suspension sleeves Passive vacuum Active / elevated vacuum Ethnocare specifies the product for users across K1 to K4 activity levels. Materials Proprietary moisture-management knit Available Circumference Sizes 23 28 35 Available Lengths Short (SH): 14–20 cm Medium (MD): 20–28 cm Long (LG): 28–32 cm Extra Long (XL) Ideal for Hot Climates and Active Users Sweat accumulation inside a prosthetic liner can affect comfort, suspension and skin condition, particularly during exercise, long working days or in warm environments. The Ethnocare Underlay TT Open provides a simple way to manage this moisture without changing the prosthetic socket or suspension system. For prosthetic users in regions such as the Middle East, Africa and South Asia, where high temperatures and humidity can make perspiration a significant daily challenge, the Underlay offers a practical addition to the prosthetic interface that can help make extended prosthesis use more comfortable and manageable. 

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