Zoot Sports Women's Ultra Triathlon Tank 100% Polyester Body: 155 g. 71% Polyamide/29% Xtra Life Lycra ULTRArevo. Inset 1: 228 g. 79% nylon/21% spandex Teksheen. Inset 2: 200 g. 80% polyester/20% spandex Endura Machine wash cold, Gentle cycle, No softeners, Dry Flat, Do not bleach, Do not dryclean MO