The Y-shaped aligner chewies provide a scientific solution by customizing the independent biting sections for the canie teeth,incisor teeth and molar teeth Customized Biting Area Design.A chewie to match different teeth (canie teeth,incisor teeth,and molar teeth) and area Softtype chewie is suitable for people in the early period of orthodontics and can relieve a variety of orthodontic discomfort. Hard chewie is more suitable for people who have passed the initial period of orthodontics Peach flavor chewie(firm type) and apple flavor chewie(gentle type) in total Store the chewies inside clear plastic case to keep chewies clean and organized. This plastic case can also be cleaned Package includes2*Y-shaped aligner chewies Dimensions may vary slightly due to manual measurements Due to the different display screens, there may be some differences between the color and the real object, thank you