The voluminous skirts were supported by hoops, petticoats, and or crinolines. The crinolines were made of whalebone and were covered with layers of flounced petticoats. Often dancers wear specially-made square dance outfits, with multiple layers of crinolines, petticoats, or pettipants. The voluminous crinolines of the past century were now ballerina-like skirts of tulle netting. Bouffant gowns with large crinolines were probably reserved for special occasions. Other materials used for crinolines included whalebone, gutta-percha and vulcanised caoutchouc (natural rubber). Women dressed in crinolines often wore drawers under them for modesty and warmth. "Dandies" during the reign of Louis-Philippe 1st, women in "crinolines" during the Second Empire. By the 1860s, when Europe was all about made-to-fit tailoring, crinolines were considered impractical. The 1850s are well known for the crinolines, which reached greatest popularity around 1860. As the fashion for crinolines wore on, their shape changed. Crinolines and cages also started to disappear with it being more dangerous to working-class women. As with the earlier cage crinolines, sprung steel, wire and cane were used. Crinolines were popular throughout the 1950s and into the early 1960s.