Cotton unisex trousers which flared from the knee and fitted neither sex properly, but at least they were cheap and available in a wide range of colours, and hippies would wear them without thinking that they were Glam Kids.
Loons could initially only be bought by post from a company that advertised in the back of the NME and had to be worn with a Led Zep T-shirt and Jesus boots.
Loon Pants were a very big factor in the birth of Punk – anyone seen wearing a pair after January 1st 1976 got a bloody good kicking.