In the case of kosode (kimono with short sleeves) that has been used since the Muromachi period, 'awase' means the one that has a lining without cotton padding, and it is distinguished from a padded kosode for winter use.
なお、室町時代以後の小袖において「袷」とは綿の入らない裏つきをいい、冬の綿入の小袖と区別することもあった。