I got this thinking it would be a good way to keep "shopping cart" germs off my baby. It works okay. It only covers the actual handle of the shopping cart, in addition to having a sort of flap with leg holes for her to sit in. It has shoulder straps that are not the sturdiest, but get the job done. You use the grocery cart seat belt, if it has one. Some parts of the cart-seat area will still be accessible for baby to put their mouth on, so you'll still want to sanitize it with anti-bacterial wipes or something. Also, it is difficult to put on if you're holding the baby in the other arm. So, if you're by yourself with the baby, you want to try to park your car near a stray cart in the parking lot so you can put the cart cover on before you get the baby out of the carseat. I know sometimes this is not possible, but in that case you will have to do the best you can one-handed. Also, you will find that if the cart is a little bigger than average, the cover will not fit. I have actually not been been using mine lately. It got to be too much hassle--especially when baby and I are shopping alone. I just carry anti-bacterial wipes in the diaper bag and wipe down the areas she can reach.