Traditional Balsa and Tissue kits
Each kit features everything you need to build the model - pre-cut balsa wood, tissue and glue. Wind it up and fly it using the rubber motor (large rubber loop) included.
This is a very traditional British type of model that was popular immediately pre and post WWII. They have been brought back into production for the modern age with very little changed.
You can optionally "dope" the tissue to make it taught if you wish to fly outside - it also has the effect of stiffening the airframe. Search for DOPE to buy a tin.