Calida Elastic Bralette Soft Bra (02138). The Calida Elastic Bralette Soft Bra 02138 is made of cotton for naturally soft comfort against the skin and moisture-wicking to keep you cool and dry. Makes the perfect sleep bra or for any time you want comfortable support without underwires. Wireless cups are free of lining and support the breasts without bulky linings or uncomfortable underwires. Calida's Elastic Bralette Soft Bra is made from superior quality cotton and elastane.