There are 2 different dimensions listed:17 x 6 x 5.5 in in the product description and then 21 x 8 x 5 in. Which is it? Know any that are shorter?

Hi, Thank you for reaching out, this is a good question! The 17x6x5.5 is our product shipping dimensions, which typically helps our customers re-ship internationally or if they plan to fly with the product. The dimensions: 21x8x5 is the product out of the box and in use. We hope this information is helpful, Holly

Where do I purchase cases for this pillow

I would also like the option to purchase pillow cases separately, preferably organic cotton instead of the horrible pilling polyester. I like the pillow itself but hate the cover.

How would this work for me in a wheelchair, will it keep my thoracic pushed forward for support?

I’m not sure if I fully understand your question, but if you want to use this bolster behind your back while seated in a wheelchair, it is quite thick and may prove to be uncomfortable.

Item Weight	15.04 ounces
Item Dimensions L x W	12.6"L x 7"W
Size	Knee
Pattern	Solid
Color	White
Fabric Type	Polyester and Viscose Rayon
Material Type	super-breathable Lulltra fabric (polyester and bamboo-derived viscose rayon)
Product Care Instructions	Machine Wash
Fill Material	Memory Foam
Recommended Uses For Product	Maternity
Item Firmness Description	Soft
Target Use Body Part	Legs
Special Features	Adjustable

Leg Support & Knee Pillow for Side Sleeper, Adjustable Soft Orthopedic Leg Pillow for Sleeping, Pregnancy, Sciatica, Back, Hip and Joint Support with Washable Cover

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