from web site
The Hawley Retainer is the most Buy Hawley Retainer Online popular retainer that orthodontists use when they remove a patient’s braces. The reason for its popularity is that it not only retains the teeth in their current position, but also lasts up to five years. It is made of hard acrylic that fits the palate and a wire that fits across the front of your teeth that will keep your teeth from moving.