ZERO GRAVITY Fern Embroidered iPhone 6/7 Case in Black. ZERO GRAVITY Fern Embroidered iPhone 6/7 Case in Black. Hard acrylic snap on iPhone 6/7 case. Direct access to all device features. Flexible plastic rim. Embroidered detail. ZERO-WA54. FERN. ZERO GRAVITY is a culture, a movement, and a brand with an identity. Our mission is not to try to make you look more cool, or more fashionable, but to only EMBRACE WHO YOU ARE individually. We do this by fusing fashion, pop culture, and technology together.