"Isobel" Skirted Bikini Brief by Panache. The skirted brief has a built in bikini pant and is ideal for offering extra coverage. Made from Xtra Life Lycra a material designed to reduce damage due to swimming pool chlorine. Matching items available. 81% Polyamide, 19% Lycra Elastane. Gusset Lining 100% Polyester.