I ordered this Sciatica Seat Cushion online from Harriet Carter. I was so surprised when it came because it was so small. I didn't intend to use it for my cycle but it was so small that I didn't have a choice. It's the cutest thing and it fits perfectly over the seat of my exercise bike. Prior to using this on my bike, I was using just regular pillows secured with rubberbands. Actually, the only way to keep this pillow over the seat is to use rubberbands to keep it in place, or else it will definitely fall off.
I have moderate pain in my lower pelvis area but it is not severe or aches every minute of the day. Actually i'm about 80% pain free but I do experience some pain after sitting for about an hour. I can sit and do computer work for a long time but I have to get up out of my chair about every 20 mins or so just to stretch out my lower back.
Here's what it looks like when I put it on one of my bar stools. It's pretty small but I imagine it's pretty good for traveling because it's so small. It has a blue fabric cover over the actual white cushion.
This is the inside of the pillow. I imagine inside the white sheet-like fabric is some sort of spongy cushion. It is rather stiff and firm but I do like it because I really don't want anything that will cave in and flatten after sitting for extended periods.
Here I have it sitting on a glass coffee table.
This is another view of the pillow on top of my exercise bike seat. I did have to place a rubber band around the pillow and seat to keep it from slipping. I doubt it was made for this sort of thing but since it's so small and I really needed a better pillow for my bike, it came in handy.