If you read my article on the UNUN and aerial I use you will see that my own antenna seems to be clad in a blue sleeve. This aerial is designed to be collapsible - it can be erected in about two minutes and dropped in less. It tunes all HF bands and despite the clever ones who know it cant work, consistently delivers DX. I made one for G7UFI this week and yesterday worked Alex, UR5LAM on 20m CW.
I can now supply these aerials, ununs and masts as a complete package for £110 posted top UK and Europe. You can buy this package and be up /P in minutes. (You will need a way of supporting your mast!! I use a "drive-on" stand).
UNUNs alone are £20 posted.