WHILL Model C2 High Back power wheelchair with a black arm cover, three-quarter view

WHILL Model C2 High Back

ManufacturerWHILL
ModelModel C2 High Back
$4,299.00
Most items ship in 3 to 7 business days.

The Model C2 with a 20" back support that carries the shoulders rather than stopping at the waist. It adjusts from 21.8" to 26.5" and locks at 90, 95 or 100 degrees. Built for the 18" and 20" seats only.

Back support height
21.8" to 26.5"
Weight capacity
300 lbs.
Top speed
Up to 5 mph
Range per charge
Up to 12.4 miles
Free shipping Low Price Guarantee 30-day returns, 20% restocking fee Expert support
Overview

A 20" back support on the chair that turns inside 29.9".

The Model C2 with a back roughly twice the standard height, adjustable from 21.8" to 26.5" and lockable at 90, 95 or 100 degrees. Everything under the seat is unchanged.

Watch it in action
Model C2 features and functions

Built for real life

What stands out

A 20" back support

Roughly twice the height of the standard Model C2 back, adjustable through a 21.8" to 26.5" range so it can be set to your shoulders.

Three locked angles

The back sets at 90, 95 or 100 degrees and stays there, so the recline is a fitting decision rather than something to hold yourself against.

Omni-directional front wheels

Each front wheel carries 10 compact rollers, so the chair slides sideways into a turn. The turning radius is 29.9".

Separates for a car

It comes apart by hand into four parts. The heaviest piece is the rear drive base at 42.8 lbs.

Airline approved battery

The 6 lbs. lithium battery is approved for air travel and charges in about 5 hours.

The Hieline Take

This is the Model C2 with one change that matters, and it is the right chair when the standard back stops too low. The 20" support is roughly twice the height of the one on the standard C2, it adjusts through a 21.8" to 26.5" range and it locks at three angles, so it holds the shoulders and upper back for someone who sits in the chair all day rather than moving in and out of it. Everything below the seat is the C2 exactly: the same omni-directional wheels turning inside 29.9", the same 3" of ground clearance, the same 300 lbs. capacity and the same 12.4 miles on a charge. Two things to weigh. It costs $300 more than the standard C2, and WHILL builds it on the 18" and 20" seats only, so a 16" seat rules it out. If the standard back already supports you where you need it, the Model C2 does the same job for less.

Straight talk

Is it right for you?

A good fit if you

  • need support above the waist, the back is 20" and adjusts from 21.8" to 26.5"
  • want the back set at a fixed recline, it locks at 90, 95 or 100 degrees
  • take an 18" or 20" wide seat
  • need one chair for indoors and outdoors, it has 3" of ground clearance and clears a 2" obstacle

Look elsewhere if you

  • take a 16" seat, WHILL does not build the high back for that width
  • are supported by a standard back already, the Model C2 does the same job for $300 less
  • need to fold a chair and lift it alone, the Model F folds and weighs 58.9 lbs.
  • want the frame itself in a colour, the colour on this chair is the arm cover and the frame is black

Getting the size right

Not sure it will fit you?

Five measurements, taken at home with a tape and a firm chair, tell you whether a seat will suit you. The guide opens right here with a printable worksheet.

Five measurements · printable worksheet · no sign-up

How to measure for a wheelchair

How to measure for a wheelchair

Getting the right wheelchair starts with getting the right fit. A chair that is too wide, too narrow, too deep or too short is uncomfortable and hard to use.

You do not need dozens of measurements to get started. For most manual wheelchairs, transport chairs and power wheelchairs, the five below will get you to the right size.

Side view of a person seated in a wheelchair-style seatSide view. B is seat depth, measured from the backrest to the crease behind the knee. C is lower leg length, from the crease behind the knee to the bottom of the heel. D is back height, from the seat surface to the top of the backrest. E is elbow height, from the seat surface to the underside of the elbow.DBCE
Front view of a person seated in a wheelchair-style seatFront view. A is hip width, measured across the widest part of the hips and thighs. The dashed lines mark the outer edges of the seat, which sit wider than the hip measurement.A

Before you measure

Sit upright in a firm chair. Wear the shoes and the clothing you expect to use with the wheelchair. Have someone help you, because the measurements are far more accurate when somebody else holds the tape.

  1. Measurement A. Hip width

    Measure the widest part of your hips or thighs while seated. Keep the tape straight across your body rather than wrapping it around you.

    This is the measurement that points you at a seat width.

    Leave yourself a little room. If your seated hip width is about 19", look at a seat that gives you a small amount of clearance rather than one measuring exactly 19".

    Do not go wider than you need. A wider seat makes the whole wheelchair wider, and that makes doorways and indoor turns harder.

  2. Measurement B. Seat depth, also called upper leg length

    Measure from the back of your buttocks to the crease behind your knee while seated.

    The front edge of the seat should never press against the back of your knees. Aim for about 1" to 2" of space between the seat edge and the back of the knee.

    A seat that is too deep presses behind the knees. A seat that is too shallow leaves your thighs without support.

  3. Measurement C. Lower leg length

    Measure from the crease behind your knee down to the bottom of your heel, wearing your normal shoes. Keep your knee bent at about 90 degrees.

    This one tells you about seat-to-floor height, footrest height, legrest adjustment and footplate position.

    If the wheelchair comes with a cushion, remember the cushion raises your seated height.

  4. Measurement D. Back height

    Sitting upright, measure straight up from the seat surface to where you want the top of the backrest to sit.

    The right back height depends on how much upper-body support you need. A lower back gives an active manual wheelchair user more freedom to move. A higher back gives more trunk and upper-body support.

    If you are unsure how much support you need, call us before you order.

  5. Measurement E. Elbow height, where the armrests adjust

    Relax your shoulders, let your arms hang at your sides, and bend your elbow to about 90 degrees. Measure straight up from the seat surface to the bottom of your elbow.

    This gives you a comfortable armrest height on any chair with height-adjustable armrests.

Weight capacity

Always compare the rider's weight against the manufacturer's stated weight capacity. Never choose a wheelchair rated below the rider's actual weight.

If the rider is close to a chair's maximum, move up to a higher-capacity model.

BandCapacity
StandardUp to 300 lbs.
Heavy dutyAbove 300 lbs., up to 400 lbs.
BariatricAbove 400 lbs.

Make sure the wheelchair fits your home

Seat size is only half of it. Before you order, compare the wheelchair's overall dimensions against the places it has to go. Measure:

  • The narrowest doorway it has to pass through
  • Hallways and tight corners
  • The bathroom entrance
  • The bedroom entrance
  • Elevators, if you use one
  • Your vehicle's cargo space, if the chair travels

Check the manufacturer's listed overall width as well as the seat width. A wheelchair with a 20" seat measures considerably more than 20" from wheel to wheel.

For a power wheelchair, check the listed turning radius too, so you know it can turn where you need it to.

Your measurements

Type your numbers straight into the boxes below, or print this page and write them in by hand. When you are done, copy them and email them to us, or call and read them out.

inches
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lbs.
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Need help choosing the right size?

Sizing varies between manufacturers and between models. If you are unsure which size to order, we are happy to help.

Send us your measurements along with the wheelchair you are considering, and a Hieline Medical specialist will compare them against that manufacturer's available seat sizes and specifications.

Call 1-855-HIELINE or email care@hieline.com with your measurements and the model you are considering, and we will tell you which seat size to order.

Important

This guide helps you select standard mobility equipment. It is not a clinical seating assessment. A rider with significant postural needs, pressure-management concerns, asymmetry, contractures or other complex seating requirements should be evaluated by a seating or rehabilitation professional.
Build & Buy
Color
Select one.What does this mean?

On this chair the color is the arm cover. The frame, the seat and the wheels are black whichever one you pick, and every color costs the same.

Arm covers are also sold on their own as a pair, so you can change the color later without changing the chair.

Seat
Select one.What does this mean?

Two sizes, and they cost the same. The high back is built for these two widths only.

Width is how wide the seat is across. Sit upright, have someone measure the widest part of your hips, then add about two inches so you are not pressed against the arms.

Depth is 18" on both. Measure from your back to the back of your knee and aim for a gap of three or four fingers behind the knee.

The seat size also sets how wide the whole chair is, from 23.6" up to 25.6", which matters if you have a narrow doorway to get through.

If a therapist has measured you, their numbers win over anything here. If nobody has, use the measuring guide on this page.

Joystick mount
Select one.What does this mean?

This sets which armrest the controller sits on.

Put it on the hand you already use. For most people that is the hand they write with. Choose the other side if that hand is out of commission. Both sides cost the same and neither is an upgrade.

Joystick position
Select one.What does this mean?

This is the armrest the joystick sits on. Most people choose the side of their stronger hand. Both sides cost the same.

Legrests
Included.What does this mean?

This chair has one fixed footplate and no alternative, so there is nothing to choose here.

Accessories
Optional. Tap any add-on to include it in your order.What does this mean?

These are extras that fit onto the power wheelchair, and every one of them is optional. Adding them here means they arrive with it rather than as a separate order later.

Read each card before you add two of them. Some accessories mount in the same place, so only one of those can be fitted at a time.

Delivery
Included.What does this mean?

This section is how your order reaches you and how far into your home it comes.

Curbside is the free option. The power wheelchair ships from the manufacturer straight to your address. Allow about two to three days for the order to be processed and shipped, then about five more in transit depending on where you live. No carrier in this trade quotes an exact date, so treat both figures as estimates rather than promises. It arrives boxed at the curb, and getting it inside is yours to arrange.

This one comes in a single box and the setup is not hard. The box goes through a normal doorway and most people manage it on their own. The free option is a fair choice here.

Warranty
Included.What does this mean?

This section covers what the manufacturer warrants and for how long.

There is nothing to buy here. The full terms are in the Warranty tab further up this page.

Your total
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