I've seen these on other big cruisers-they are leather panels that fill in the open area in a set of crash bars. I ride in cold weather, and we get big daily temperature swings (40 degrees is typical). So mornings can be chilly, even on a summer day. I'd like the wind protection early/late in the year-and on a rainy day. I haven't been able to find any yet. I know a local leatherworker I might talk to but figured I'd ask first. Thanks.