I recently wrote a review on Amazon for a shopping cart seat cover.  They are typically for use with babies, but I hate touching the cart handles.  There are so many germs on shopping cart handles, including fecal matter and such.  Just ew.  I don't even like putting my purse in that situation.  I decided to purchase this seat cover because it wasn't very expensive.  (Only $7.97, compared to most covers at $20 or more)

I was skeptical at first because I wasn't sure what kind of material was used.  In the picture, it looks like a thin windbreaker-type material.  However, once I received it, I was very impressed with the quality.  It is made of a cotton/poly blend polka-dot material that is really cute.  The main picture on Amazon, doesn't do it justice.  (That's why I also added photos of it that I took myself :-)

It is sewn together well, with Velcro to fasten it onto the cart.  It also has a plastic fastener to lock in your baby, purse, dog, or what not.  I haven't washed it yet, but I am really impressed with it. 

The main part of the cover.  Very cute pattern.

Plastic fastener

Underside Velcro

Underside of cover.  It is sewn very well.

I hope this review helps you!