1. There may be little difference in the size due to manual measurement. 2. The color might exist slightly difference due to different display devices.The bristles are made from soft and medium, DuPont, nylon with high elasticity, longer lifetime, better anti-deformation, enhancing whitening effect. And the colour of the bristles depends on your requirement. The handle is made of 100% biodegradable straw, an environmentally sustainable material. The subtropical monsoon climate are also beneficial to growth of straw. The straw is heat treated to carbonize the surface of the bamboo, giving it a high quality finish and better service life. The carbonization finishing process provides water resistance and prevents the growth of microbes (bacteria and molds) during normal use.  Packing (blister, white paper, brown paper, kraft box, eco-bag, cotton bag, organza bag, bamboo box)This toothbrush handle is made from natural straw, which is healthy, hygienic and harmless to human body. With environmentally friendly and biodegradable packaging, the toothbrush is suitable for adults, we can also customize the size for children or as you need, the color of the bristles can also be customized according to your needs. This toothbrush can be used as a personal toothbrush, guest bathroom toothbrush, travel toothbrush or camping toothbrush.Super soft bristles can better protect gums and protect oral health.