Most women prefer this style, because it is more lifelike. Silicone is closer to the consistency and weight of a natural breast. You may find the weight a bit tiring, but it can help balance the other breast and keep your posture straight. Silicone products are hand washable. Many prostheses are shaped to include a nipple on the front.
Prostheses also come with different kinds of covers.
Most have some type of cloth cover, like soft cotton. Others come with a latex cover. Some brands now offer a cloth pad on the back to absorb perspiration and keep you cooler. It's worth taking the time to find one that matches your other breast and is comfortable. If you really want to splurge, you can buy a custom-made prosthesis that is made specially for you, to fit the contour of your body and match your other breast.