Travel toothbrushes are designed to be durable, convenient and small enough to fit into a travel bay, purse or pocket. They are often provided on international flights, in hotels and in vending machines. Toothbrush and toothpaste are usually combined into one easy-to-carry unit. Once the unit is separated, the detachable head then fits securely into the plastic cover, so the cover easily goes from protecting the brush to serving as a graspable handle. Some models of travel toothbrush market anti-bacterial bristles which stay cleaner between uses for up to 60 brushings. Other models have an assortment of attractive colors and weigh less than an ounce.