Alpha® SmartTemp Silicone Fabricless Symmetrical 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 help reduce tissue breakdown
    • Can improve suspension
  • Low flow prevents silicone migrating away from sensitive areas
  • High rebound maintains original gel shape
  • Suitable for medium to high activity levels

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: T990 Kategori:


Symmetrical Profile

The symmetrical profile has increased thickness distally to provide increased comfort and protection. This tapers to 4.5mm proximally for easy donning, and a thinner edge when cutting. Being uniform circumferentially means that it can be rotated by the user to increase its lifespan.

  • 9mm distal end
  • Thins to 4.5mm proximally
  • Uniform circumferentially


Alpha fabric-less liners were developed for use with the One system. However, they can also be combined with the One seal and One sock for a seal-in solution.

Technical Specifications

Interface MaterialAmputation LevelOuter FabricSuspension TypeProfileFunctionalityWarrantyOptional Trial Period
SmartTemp SiliconeTransfemoralFabric-lessCushionSymmetrical 4.5mmTemperature regulation12 months from fitting date30 days

Ordering Information

Alpha SmartTemp Silicone Fabricless Symmetrical Liner Product Codes

SizeProduct CodeProximal Measurement
Distal Measurement
Medium PlusT990-194430-54cm20-29cm
Large PlusT990-194841-80cm32-39cm
Extra LargeT990-194746-90cm37-45cm

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

One Gel Sock

Item NumberDescription
ONE-SOCK-MPOne Gel Sock Medium Plus
ONE-SOCK-LGOne Gel Sock Large
ONE-SOCK-LPOne Gel Sock Large Plus
ONE-SOCK-XLOne Gel Sock Extra Large

One Seal

Item NumberDescription
ONE-SEAL-MPOne System - One Seal Medium Plus
ONE-SEAL-LGOne System - One Seal Large
ONE-SEAL-LPOne System - One Seal Large Plus
ONE-SEAL-XLOne System - One Seal Extra Large


Alpha Liner Manual

Alpha SmartTemp Silicone Fabricless Symmetrical Liner size guide

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