Bags of energy and elbow grease are essential if your hobby is feltmaking.

But the end result of all that hard work can be spectacular -- proof being the exhibition at East Riddlesden Hall's Airedale Barn. Feltmakers from throughout the north of England have combined to show their skills in an exhibition organised by the International Feltmakers Association (North West and North East).

Chairman of the North East region, Sheila Smith, from Thirsk, said: "To make felt you need moisture, friction and heat. The friction is caused by rubbing it, rolling it, slapping it, even jumping on it -- you need a lot of energy."

Feltmaking is an ancient craft, stretching back to Roman times in Britain. It was popular because the material is very warm, strong and waterproof. "Copper miners in Wales in the Roman era wore felt hats to protect them and the soldiers on Hadrian's Wall wore felt capes to keep them warm," said Sonya Middleton, of Bradford, the group co-ordinator.

Among the exhibits is a mad monk's outfit, hats, gauntlets and a series of sculptured bodies made by artist Katie Horner. The exhibition is open Saturdays and Sundays from 1pm to 5pm and Tuesday and Wednesday from noon to 5pm, until October 1.