Size Chart Guide

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  • Below-Knee
  • Above-Knee
  • Measuring Tips & Videos

STEP 1: Bottom Circumference

Measure the circumference of your limb 4cm and 30cm up from the bottom. Continue to STEP 2: Find your size 

 

Measuring for Willowwood Alpha Duo prosthetic liner.

STEP 2: Find your size

Take your top and bottom measurements and use the chart to determine your size. If you're in-between sizes, we suggest remeasuring again to be on the safe side. If the size you arrived at after measuring seems too big or small, in some cases it helps to use the size of your current liner as a very rough guide. The size may be printed on the liner or you can contact our team and provide the serial number printed on the side. Continue to STEP 3: Length

SIZE TOP BOTTOM
Small

19 - 30 cm

(7.5 - 11.75in)

14 - 22 cm

(5.5 -8.6in)
Medium

26 - 46 cm

(10 - 17in)

20 - 29 cm

(8 - 11.5in)
Medium Plus

30 - 54 cm

(12 - 21in)

20- 29 cm

(8 - 11.5in)
Large

33 - 64 cm

(13 - 25in)

28 - 36 cm

(11 - 14in)
Large Plus

41 - 80 cm

(16 - 31.5n)

32 - 39 cm

(12.5 - 15.5in)
X-Large

46 - 90 cm

(18 - 35.5n)

37 - 45 cm

(14.5 - 18in)

STEP 3: Length

Length is a matter of preference. You can trim this liner with a very sharp scissors. Start by applying your Willowwood Alpha Duo Prosthetic Liner and mark on the liner where you want to trim. Remove your liner and trim at your mark.

 

STEP 1: Bottom Circumference

Measure the circumference of your limb 4cm and 30cm up from the bottom. Continue to STEP 2: Find your size  

 

Measuring for Willowwood Alpha Duo Transfemoral AK prosthetic liner.

STEP 2: Find your size

Take your top and bottom measurements and use the chart to determine your size. If you're in-between sizes, we suggest remeasuring again to be on the safe side. If the size you arrived at after measuring seems too big or small, in some cases it helps to use the size of your current liner as a very rough guide. The size may be printed on the liner or you can contact our team and provide the serial number printed on the side. Continue to STEP 3: Length

SIZE TOP BOTTOM
Small

19 - 30 cm

(7.5 - 11.75in)

14 - 22 cm

(5.5 -8.6in)
Medium

26 - 46 cm

(10 - 17in)

20 - 29 cm

(8 - 11.5in)
Medium Plus

30 - 54 cm

(12 - 21in)

20- 29 cm

(8 - 11.5in)
Large

33 - 64 cm

(13 - 25in)

28 - 36 cm

(11 - 14in)
Large Plus

41 - 80 cm

(16 - 31.5n)

32 - 39 cm

(12.5 - 15.5in)
X-Large

46 - 90 cm

(18 - 35.5n)

37 - 45 cm

(14.5 - 18in)

STEP 3: Length

Length is a matter of preference. You can trim this liner with a very sharp scissors. Start by applying your Willowwood Alpha Duo Prosthetic Liner and mark on the liner where you want to trim. Remove your liner and trim at your mark.

 

When measuring your thigh, pay special attention to how tight you take your measurement. It's best to pull the ends of your tape measure somewhat tight and then release. Your goal is to find a middle ground of how much tension you should apply to your measuring tape. Too tight and too loose will both result in a poorly fitting prosthetic liner.

 

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Prosthetic Categories

WillowWood

WillowWood Alpha Duo Liner, Cushion Liner, Moderate Activity, AK & BK, Fabricless

Ohio WillowWood Alpha Duo with one gel sock combines comfort of gel and stability of silicone.
Alpha duo liner with classic gel inner and silicone outer surface.
WillowWood Gel Sock designed to protect Alpha duo and provide a vacuum wick for suction suspension.
4.5mm Gel thickness throughout in symmetrical profile.
WillowWood Alpha Duo Liner with one gel sock.

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WillowWood

WillowWood Alpha Duo Liner, Cushion Liner, Moderate Activity, AK & BK, Fabricless

Size Chart Guide
€434,95
€434,95
€19,99

*This product will delay your order 7-9 business days.

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WillowWood Alpha Duo Liner Description

The WillowWood Alpha Duo offers unmatched comfort and durability. The Alpha Duo Liner is crafted with care to provide amputees with an exceptional blend of comfort, protection, and ease of use. Its innovative design combines an inner layer of skin-friendly Alpha Classic Gel, enriched with mineral oil to nurture and nourish the skin, and an outer layer of durable silicone for unmatched stability and soft tissue support.

The fabric-free exterior features a satin finish, ensuring smooth and effortless application—no lubricants required. Its symmetrical profile allows for easy liner rotation, extending its lifespan while maintaining peak performance.

Benefits

  • Inner layer of skin-friendly Classic WillowWood gel
  • Outer Silicone layer that provides stability and helps manage soft tissue on your limb
  • Requires the use of the included WillowWood's One Gel Sock applied over the Alpha Duo Liner
  • WillowWood's One Gel Sock applied over the Alpha Duo Liner
  • WillowWood's One Gel Sock has a 1.5mm profile
  • Alpha Duo Liner has no outer fabric cover, however offers a statin finish for easy application without the need for prosthetic lubricants
  • Symmetrical liner profile with 4.5mm thickness throughout, aside from 9mm thickness at the very bottom
  • Designed for prosthesis users who use a suction or elevated vacuum system
  • Available in both Below-Knee and Above-Knee sizing
  • Designed for moderate activity levels
  • Latex free and hypoallergenic
  • Cushion version is Vacuum approved as a replacement for the prosthetic liner initially provided with your Vacuum System
  • Dark Gray Color
  • Made in USA
  • Sold individually in a polybag

Suggested Use

The Perfect Balance for Every Step

Whether you use suction suspension or elevated vacuum systems, the Alpha Duo Liner delivers the ideal combination of gel’s soothing comfort and silicone’s robust durability. Its satin finish ensures the liner remains smooth and easy to apply, giving you a reliable fit without the need for lubricants. The Alpha Duo Liner is designed for both below-knee and above-knee prosthesis users. It seamlessly integrates with the WillowWood One system, including compatibility with the fabricless Alpha SmartTemp® Liner, offering flexibility to meet your unique prosthetic needs.

**For optimal performance, you must pair your Alpha Duo Liner with the included One Gel Sock, ensuring a secure and comfortable fit every time.

Experience the Alpha Duo Difference

Elevate your prosthetic experience with the Alpha Duo Liner, where comfort, durability, and innovation come together to support you every step of the way.

Read our Prosthetic Liner Guide for more information on prosthetic liners.

How-to Apply

Prior to applying your Alpha Duo Liner make sure your residual limb is clean, dry, and free of any soap residue. Cover any open wounds and non-intact skin with a product similar to Spenco. WillowWood states to avoid using any type of animal based lotions or powders on your residual limb or liner. These products may damage your WillowWood Liner.

Invert your WillowWood liner so that the logo is on the inside. Place the end of your liner against the end of your limb. Carefully roll your liner onto your limb. 

When using an Alpha Duo Liner, it is important to also apply a One Gel Sock to ensure optimal comfort and performance. After donning the Alpha Duo Liner, invert the One Gel Sock so that the fabric side faces inward. Align the end of the inverted sock with the end of the liner, then carefully roll the sock up over your limb, ensuring that the fabric side is now facing outward. Take a moment to smooth out any wrinkles or air pockets between the One Gel Sock and the liner to maintain a secure and comfortable fit throughout the day.

***Warning: Do not pull your liner onto your limb. Pulling the liner may stretch the skin and result in an uncomfortable fit and possible skin issues along the edge of your liner. Last, make sure that there are no wrinkles or air pockets between the liner and your limb. Air pockets cause excessive sweating.

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Features & Details

WillowWood Alpha Duo Prosthetic Liner Materials

Thermoplastic Elastomer (TPE) (Alpha Classic Gel), Outer Soft Silicone

Directions for Use

Prior to applying your Alpha Duo Liner make sure your residual limb is clean, dry, and free of any soap residue. Cover any open wounds and non-intact skin with a product similar to Spenco. WillowWood states to avoid using any type of animal based lotions or powders on your residual limb or liner. These products may damage your WillowWood Liner.

Care Instructions

Proper hygiene is critical when wearing any prosthetic liner. Your Alpha Duo Liner must be thoroughly cleaned each day and disinfected once a week. Clean the gel side of your Alpha Duo liner using lukewarm water and a pH balanced prosthetic cleanser. Apply your prosthetic cleanser with a clean, soft cloth or sponge.

**Warning: Do not scrub your liner on either the fabric or gel sides.

Rinse your Alpha Duo Liner with water and dry it with a clean and lint-free cloth. Place your Duo Liner on a drying stand with the logo on the outside.

Once a week spray the gel side of your liner with ethyl alcohol spray and wipe clean with a lint-free soft cloth. Last, rinse any alcohol from your liner with water and dry again using the above instructions.

Precautions

Do not place your WillowWood Alpha Duo Liner on an open wound. If irritation, discomfort or poor circulation occurs, discontinue use and notify your physician or Prosthetist immediately. Do not wear an Alpha Duo for more than 20 hours daily.

This Alpha Duo Liner is not indicated for any amputee who has a skin condition which can be aggravated when covered by a non-porous gel material. Above knee liner sizes should not be used by any prosthesis user whose residual limb is shorter than 3 inches, unless a secondary AK Belt is used.

Part Numbers (SKUs)

SIZE BELOW KNEE ABOVE KNEE
Small D990-1943 D990-1943
Medium D990-1940 D990-1940
Medium Plus D990-1944 D990-1944
Large D990-1946 D990-1946
Large Plus D990-1948 D990-1948
X-Large D990-1947 D990-1947

Returns

If you're not completely satisfied with your Amputee Store purchase, you can return your eligible items within 90 days of the original ship date. Items in new condition (unopened/unworn/unwashed) can be returned for a full product refund less original shipping costs. Please read our complete return policy for further instructions.

Customer Reviews & Questions
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