There are a few different types of rubber mats, each with different levels of absorbency. Foam rubber mats are the most absorbent, while solid rubber mats are the least absorbent. In between, there are mats made of recycled rubber, which are moderately absorbent. Foam rubber mats are made of small cells of air that are surrounded by rubber. This design gives them a spongy texture that is perfect for absorbing water. Solid rubber mats, on the other hand, are made of a single piece of rubber. This makes them much less absorbent than foam rubber mats. Recycled rubber mats are made from recycled tires. They have a similar absorbency to foam rubber mats, but they are not as spongy. This makes them less comfortable to stand on, but they are still effective at absorbing water.