Alpha® SmartTemp Silicone Progressive Liner

SmartTemp Silicone combines medical-grade silicone with the heat management technology of Outlast®. Utilising this phase change material (PCM) – originally designed for NASA – the liner regulates heat by responding to skin temperature fluctuations, delaying the onset of sweat. The liner releases the stored heat as the body cools down, stabilising the skin temperature. Maintaining this temperature balance can lead to a drier, cooler and thus more comfortable socket all day.

Features and benefits

  • Outlast technology regulates socket heat and stabilises skin temperature
  • Reduced sweating
  • Can improve suspension
  • Low flow prevents silicone migrating away from sensitive areas
  • Suitable for medium to high activity levels
  • Unidirectional stretch – eliminates pistoning without a distal matrix
  • Multidirectional stretch – reduces shear over patella
  • Increased durability
  • Can accommodate volume fluctuations

Measuring Guide

Ensure accurate measurements at 4cm and 30cm from the distal end to determine the most appropriate liner for the user

Product Part Number: T35X Category:


Progressive Profile

The progressive profile provides the ideal combination of thick gel for sensitive areas, and thin gel for movement and donning.

  • 9mm thick distal end
  • 6mm along tibial crest
  • 2.5mm posterior to knee
  • 2.5mm circumferentially at proximal end

Select Fabric with panel

The Select fabric is WillowWood’s most durable and comfortable offering. By combining two distinct materials, it offers support, compression and flexibility. To prevent pistoning the majority of the fabric has unidirectional stretch, meaning a distal matrix is not required. This allows easy donning and accommodation of volume changes without the need for a new liner. To reduce shear stress over the patella, there is a multidirectional stretch panel over the knee which improves comfort in flexion.

Accordion Umbrella

The accordion umbrella increases socket comfort by conforming to the shape of the underlying residuum, reducing stress and providing a more uniform pressure distribution. The umbrella size corelates to the liner size, meaning equal comfort and conformity across all sizes.

Technical Specifications

Interface MaterialAmputation LevelOuter FabricSuspension TypeProfileFunctionalityWarrantyOptional Trial Period
SmartTemp SiliconeTranstibialSelectLocking - Accordion/Standard Umbrella, CushionProgressiveTemperature regulation12 months from fitting date30 days

Ordering Information

Alpha SmartTemp Silicone Progressive Liner Product Codes

SizeProduct Code
(Locking – Accordion Umbrella)
Product Code
(Locking - Standard Umbrella)
Product Code
Proximal Measurement
Distal Measurement
Small 1NAT352-6593-1T350-6593-119-32cm14-22cm
Small 2NAT352-6593-2T350-6593-221-32cm16-23cm
Medium 1T352-6590-1NAT350-6590-126-44cm20-24cm
Medium 2T352-6590-2NAT350-6590-229-44cm24-29cm
Medium Plus 1T352-6594-1NAT350-6594-130-54cm20-24cm
Medium Plus 2T352-6594-2NAT350-6594-233-54cm24-29cm
Large 1T352-6596-1NAT350-6596-133-64cm28-32cm
Large 2T352-6596-2NAT350-6596-236-64cm32-36cm
Large PlusT352-6598-1NAT350-6598-141-80cm32-39cm
Extra LargeT352-6597-1NAT350-6597-146-90cm37-45cm

Silicone Volume Management Pads Product Codes

DescriptionProduct Code
Pack of 2 (0,45cm and 0,75cm)ALA-VM-S2

*Only use Silicone Volume Management pads with Silicone liners


Alpha SmartTemp Silicone Progressive Liner Size Guide

Alpha Liner Manual

Alpha SmartTemp Silicone Progressive