It has heat activated glue.
Peel off the clear backing and use a sealing iron to attach the covering to the wood (make sure wood is clean) and shrink with a heat gun.
Sealing iron:
http://www2.towerhobbies.com/cgi-bin...?&I=LXL499&P=7
Heat Gun:
http://www2.towerhobbies.com/cgi-bin...&I=LXJD39&P=ML