Mountain bike shorts, also called transition shorts, are baggy and abrasion resistant on the outside. They look like shorts you might wear anywhere. However, they also include built-in liner shorts that are form fitting and padded.
Mountain bike shorts are expensive because they are more durable, made specifically for mountain biking, and they are waterproof. They are baggy and long, have padding, and are moisture wicking. … There are mountain bikers who are happy to pay the high price for these shorts.
Like their road counterparts, mountain-bike shorts offer stretch for easy leg movement and a padded crotch liner to reduce friction and wick moisture.