This slim modern Invisalign case now comes in yellow. Each case comes in a black drawstring pouch to carry your oral hygiene essentials, such as floss, chewies, toothpaste and travel toothbrush. The case keeps your Invisalign aligners and Vivera retainers secure at home and on the road. A magnetic closure ensures the case is securely fastened. The textured liner helps to minimize slipping and moving inside. Spacing behind the hinge allows for ventilation.