Chantelle Underwire Spacer Nursing Bra (1871). The Chantelle Underwire Spacer Nursing Bra 1871 is a comfortable and supportive choice for you and your baby, with breathable, non-collapsible spacer foam cups and full inner support slings. Chantelle's Underwire Spacer Nursing Bra is made of polyester/polyamide/elastane.