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width may be up to 2,5 cm (1”) wider. Depth 
(Y) of the cushion and seat should match.

•  Check if the size of the cover matches the 

size of the cushion.

•  Remove protective backing tape from 

selfadhesive Velcro strips attached to the 
bottom of the cushion.

•  Place cushion by pressing firmly.
•  Place the O2 Top Cover over the top of the 

cushion.

•  Pass the loop at the back of the cushion 

through the ‘button hole’ in the back of the 
cover.

•  Sit on the cushion for a few minutes, to allow 

the cushion to adapt to your body shape.

•  If necessary, adjust footrest(s).

Alternative cushion covers
Perform the following steps when using the 
Comfair Cover, Incotec Cover or Reversible 
Cover.
Please note: The Reversible Cover is delivered 
with the cool breathable side on the outside. If 
you require the fluid-resistant side of this cover: 
first unzip the top section of the cover 
completely from the bottom section, turn top 
section inside out and rezip it to the bottom 
section.

•  Check cushion size. Width (X) of the cushion 

and seat should match. When the cushion 
rests against armrests or side-guards, the 
width may be up to 2,5 cm (1”) wider. Depth 
(Y) of the cushion and seat should match.

•  Check if the size of the cover matches the 

size of the cushion.

•  Remove the Velcro strips from the bottom of 

the cushion. Note that the strips confected to 
the bottom of the cushion cannot be 
removed.

•  Insert cushion in cover.
•  Pass loop through eyelet in cover. 

 

•  Close zipper. Make sure to not damage the 

cushion.

•  Remove protective backing tape from 

selfadhesive Velcro strips attached to the 
cushion cover.

•  Place cushion by pressing firmly.
•  Sit on the cushion for a few minutes, to allow 

the cushion to adapt to your body shape.

•  If necessary, adjust footrest(s).

Checking for “bottoming out”: 
Image 7 - Quick Installation Guide
Warning! Your tailbone and pelvic bones should 
not touch the bottom of the cushion. Checking 
for “bottoming out” should be done during first 
use and after adjustments to the cushion filling. 
Warning! Vicair B.V. recommends to adjust the 
filling grade under the direct supervision of your 
therapist or technical advisor. 

•  Check for bottoming out, after sitting on the 

cushion for approximately 5 minutes. 

•  Let your therapist or technical advisor slide a 

hand between your buttocks and the Vicair 
cushion while leaning forward. 

•  Ask your therapist or technical advisor to 

check if your lowest bony prominences are 
supported by at least 2,5 cm / 1” of 
SmartCells™. This prevents them from 
touching the wheelchair seat. 

•  Do not use the cushion if bottoming out 

occurs. In most cases, adjusting the filling 
grade of the compartments will solve the 
problem. 

USE 

Checking for redness of the skin 
Image 8 - Quick Installation Guide
Warning! Check your skin regularly for redness, 
especially during the first few days. If redness 
occurs and does not disappear after 15 minutes, 
consult your therapist or technical advisor. 

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