There may be little difference in the size due to manual measurement. The color might exist slightly difference due to different display devices.The color of the bristles will change when the toothbrush needs to be replaced. Toothbrushes come in a variety of colors and packaging. Toothbrush can be customized service. Cheap but durable. This toothbrush is not disposable and can be used for a long time (a new toothbrush is needed if the color of the bristles changes). Gentle in Gums: harsh brushing and stiff Bristles can irritate your gum line. The toothbrush cleans gently to promote gum and oral health. Stock Up: Keep Multiple On Hand To Stay Stocked Up Year Round. For whatever reason, if you are not satisfied with our toothbrush, just contact us through Amazon or return the product.This color fading toothbrush can remind you to replace your toothbrush, which means your toothbrush needs to be replaced when the bristles change color. This toothbrush is healthy, hygienic and harmless to human body. Having a good cleaning shape, you can choose from a variety of bristles. Soft bristles are gum friendly, perfect for people with sensitive gums. This toothbrush reaches a large area in the teeth which can greatly reduces oral irritation. Soft bristles reach into the gum line to remove bits of food scrape off plaque and gently massage the gums. Soft bristles help clean stains and protect oral health. Custom-tailored production is available. Color and material of the bristles, the color of the handle and the logo can be signed by customer’s decision.