NWT J Crew Denim Overall Jumpsuit In Indigo Blue Size S Product Details Cotton/polyester/elastane. By buying cotton products from J.Crew Factory, you're supporting our investment in Better Cotton's mission to help cotton communities survive and thrive while protecting and restoring the environment; this product is sourced through a system of mass balance and therefore may not contain Better Cotton. Button closure. Machine wash. Import. Select stores. Item AU616.