Gliders for the Swish Nylonglyde and Twinglyde curtain tracks.

The Twinglyde is the version that has an integrated valance rail.

This curtain rail and glider system is often found on Caravans and Campervans.

The previous version of this glider was made from Nylon rather than PVC and the eyelet for the curtain hook was loose rather than integrated, see the photo below. The new Swish Nylonglyde glider fits the older tracks.