Alpha® Classic BK Liner

In order to provide an excellent socket fit and maximum comfort, Alpha Classic Liners are available in three gel thicknesses and various profiles. Alpha Classic Liners are composed of a skin-friendly thermoplastic elastomer. The gel flows to adapt to uneven socket pressures, while its low rebound means the liner maintains its adapted shape over time. The liners are heat moldable, allowing prosthetists to easily stretch the liners within their facilities.  

The durable Original fabric helps extend the life of the liner. To aid in maximizing socket life, Alpha Classic Liners will retrofit with other Alpha Liners having the same profile, thickness, and umbrella. 

Features and benefits:

  • Distinct gel profiles accommodate various transtibial limb shapes  
  • Available in Cushion and Locking  
  • Available in 3 different fabrics 
  • Thermoplastic elastomer gel with mineral oil

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: ALCU Category:

Description

Uniform Profile

The uniform profile is retrofittable with most liners on the market. This means that a user can upgrade to receive the benefits of Alpha interface materials, without having to change their socket.

  • 6mm thick distal end
  • Thins to 3mm posterior to knee

Tapered Profile

The Tapered profile is retrofittable with most liners on the market. This means that a user can upgrade to receive the benefits of Alpha interface materials, without having to change their socket as long as liner thickness, profile, and umbrella style are consistent.

  • Extra 3 mm of gel around the distal circumference
  • Gel behind the knee thins to 3 mm for easy bending of the knee
  • Ideal for conical residual limbs and applications

Contoured Profile

The Tapered profile is retrofittable with most liners on the market. This means that a user can upgrade to receive the benefits of Alpha interface materials, without having to change their socket as long as liner thickness, profile, and umbrella style are consistent.

  • Additional 3 mm gel pads on anterior distal walls
  • Gel behind the knee thins to 3mm for easy bending of the knee
  • Good choice for transtibial amputees with prominent tibial crests

Original Fabric

This tried and tested material continues to provide flexibility for comfort and donning, whilst being supportive enough for a good fit. Its smooth finish means it slides on easily and its durability extends the life of the liner.

Spirit Fabric

Spirit fabric is unique in its ability to flex during donning or doffing and may be used with a Velcro®-like material for added security. Ideal for geriatric amputees

Max Fabric

This exceptionally durable material can withstand even the most demanding young user. The abrasion-resistant material has unidirectional stretch to reduce pistoning

Standard Umbrella

The standard umbrella has a standard diameter of 68.6mm on all sizes.

Technical Specifications

Interface MaterialAmputation LevelOuter FabricSuspension TypeProfileFunctionalityWarrantyOptional Trial Period
Classic GelTranstibialOriginal, Spirit or MaxLocking – Standard Umbrella, CushionUniform, Tapered or ContouredComfortable K1/K2, Pressure Relief12 months from date of fitting30 days

Uniform Profile Ordering Information

Uniform Profile 3mm Original (Green/Grey) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
SmallALL-5033ALC-503320-27cm15-22cm
MediumALL-5030ALC-503023-36cm18-26cm
Medium PlusALL-5034ALC-503433-50cm20-28cm
LargeALL-5036ALC-503636-55cm25-33cm
Large PlusALL-5038ALC-503840-60cm28-40cm
Extra LargeALL-5037ALC-503743-65cm33-45cm

Uniform Profile 3mm Spirit (Buff) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
SmallALL-5433ALC-543320-27cm15-22cm
MediumALL-5430ALC-543023-36cm18-26cm
Medium PlusALL-5434ALC-543433-50cm20-28cm
LargeALL-5436ALC-543636-55cm25-33cm
Large PlusALL-5438ALC-543840-60cm28-40cm
Extra LargeALL-5437ALC-543743-65cm33-45cm

Uniform Profile 3mm Max (Buff) Fabric Product Codes 

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
SmallALL-5833ALC-583320-27cm15-22cm
MediumALL-5830ALC-583023-36cm18-26cm
Medium PlusALL-5834ALC-583433-50cm20-28cm
LargeALL-5836ALC-583636-55cm25-33cm
Large PlusALL-5838ALC-583840-60cm28-40cm
Extra LargeALL-5837ALC-583743-65cm33-45cm

Uniform Profile 6mm Original (Buff) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
SmallALL-5163ALC-516320-27cm15-22cm
MediumALL-5160ALC-516023-36cm18-26cm
Medium PlusALL-5164ALC-516433-50cm20-28cm
LargeALL-5166ALC-516636-55cm25-33cm
Large PlusALL-5168ALC-516840-60cm28-40cm
Extra LargeALL-5167ALC-516743-65cm33-45cm

Uniform Profile 6mm Original (Green/Grey) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
SmallALL-5063ALC-506320-27cm15-22cm
MediumALL-5060ALC-506023-36cm18-26cm
Medium PlusALL-5064ALC-506433-50cm20-28cm
LargeALL-5066ALC-506636-55cm25-33cm
Large PlusALL-5068ALC-506840-60cm28-40cm
Extra LargeALL-5067ALC-506743-65cm33-45cm

Uniform Profile 6mm Spirit (Buff) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
SmallALL-5463ALC-546320-27cm15-22cm
MediumALL-5460ALC-546023-36cm18-26cm
Medium PlusALL-5464ALC-546433-50cm20-28cm
LargeALL-5466ALC-546636-55cm25-33cm
Large PlusALL-5468ALC-546840-60cm28-40cm
Extra LargeALL-5467ALC-546743-65cm33-45cm

Uniform Profile 6mm Max (Buff) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
SmallALL-5863ALC-586320-27cm15-22cm
MediumALL-5860ALC-586023-36cm18-26cm
Medium PlusALL-5864ALC-586433-50cm20-28cm
LargeALL-5866ALC-586636-55cm25-33cm
Large PlusALL-5868ALC-586840-60cm28-40cm
Extra LargeALL-5867ALC-586743-65cm33-45cm

Uniform Profile 9mm Original (Green/Grey) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
SmallALL-5093ALC-509320-27cm15-22cm
MediumALL-5090ALC-509023-36cm18-26cm
Medium PlusALL-5094ALC-509433-50cm20-28cm
LargeALL-5096ALC-509636-55cm25-33cm
Large PlusALL-5098ALC-509840-60cm28-40cm
Extra LargeALL-5097ALC-509743-65cm33-45cm

Uniform Profile 9mm Spirit (Buff) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
SmallALL-5493ALC-549320-27cm15-22cm
MediumALL-5490ALC-549023-36cm18-26cm
Medium PlusALL-5494ALC-549433-50cm20-28cm
LargeALL-5496ALC-549636-55cm25-33cm
Large PlusALL-5498ALC-549840-60cm28-40cm
Extra LargeALL-5497ALC-549743-65cm33-45cm

Uniform Profile 9mm Max (Buff) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
SmallALL-5893ALC-589320-27cm15-22cm
MediumALL-5890ALC-589023-36cm18-26cm
Medium PlusALL-5894ALC-589433-50cm20-28cm
LargeALL-5896ALC-589636-55cm25-33cm
Large PlusALL-5898ALC-589840-60cm28-40cm
Extra LargeALL-5897ALC-589743-65cm33-45cm

Gel Volume Management Pads Product Codes

DescriptionProduct Code
Volume Management Pads (set of 3) (S,M & L)ALA-VM
Volume Management Pads, Small, set of 3ALA-VM-SM
Volume Management Pads, Medium, set of 3ALA-VM-MD
Volume Management Pads, Large, set of 3ALA-VM-LG

*Only use Gel Volume Management pads with Gel liners

Tapered Profile Ordering Information

Tapered Profile 3mm Original (Green/Grey) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
MediumALL-7030ALC-703023-36cm18-26cm
Medium PlusALL-7034ALC-703433-50cm20-28cm
LargeALL-7036ALC-703636-55cm25-33cm

Tapered Profile 6mm Original (Green/Grey) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
MediumALL-7060ALC-706023-36cm18-26cm
Medium PlusALL-7064ALC-706433-50cm20-28cm
LargeALL-7066ALC-706636-55cm25-33cm

Tapered Profile 9mm Original (Green/Grey) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
MediumALL-7090ALC-709023-36cm18-26cm
Medium PlusALL-7094ALC-709433-50cm20-28cm
LargeALL-7096ALC-709636-55cm25-33cm

Gel Volume Management Pads Product Codes

DescriptionProduct Code
Volume Management Pads (set of 3) (S,M & L)ALA-VM
Volume Management Pads, Small, set of 3ALA-VM-SM
Volume Management Pads, Medium, set of 3ALA-VM-MD
Volume Management Pads, Large, set of 3ALA-VM-LG

*Only use Gel Volume Management pads with Gel liners

Contoured Profile Ordering Information

Contoured Profile 6mm Original (Green/Grey) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
MediumALL-9060ALC-906023-36cm18-26cm
Medium PlusALL-9064ALC-906433-50cm20-28cm
LargeALL-9066ALC-906636-55cm25-33cm

Contoured Profile 9mm Original (Green/Grey) Fabric Product Codes

SizeProduct Code
(Locking – Standard Umbrella)
Product Code
(Cushion)
Proximal Measurement (cm)Distal Measurement (cm)
MediumALL-9090ALC-909023-36cm18-26cm
Medium PlusALL-9094ALC-909433-50cm20-28cm
LargeALL-9096ALC-909636-55cm25-33cm

Gel Volume Management Pads Product Codes

DescriptionProduct Code
Volume Management Pads (set of 3) (S,M & L)ALA-VM
Volume Management Pads, Small, set of 3ALA-VM-SM
Volume Management Pads, Medium, set of 3ALA-VM-MD
Volume Management Pads, Large, set of 3ALA-VM-LG

*Only use Gel Volume Management pads with Gel liners

Downloads

Alpha Liner Manual

Alpha Liner Size Guide