The surface of the Churyumov-Gerasimenko comet is covered with gaps, and most of its content is void from the caves with loose walls, which eventually come to the surface. Look: use them to have a glance inside the comet. The nameless void within stares back at you. — Eco-friendly, durable and extra soft sweatshirt made of organic and recycled materials. 85% organic ring-spun cotton, 15% recycled polyester. Regular fit. 350 g/m² ( 5.3 oz/yd²).