The Preserve toothbrush was developed with dental professionals over a two- year period and represents the latest in toothbrush design and function. It is constructed with environmentally friendly materials to let you replace without the waste. Join the cycle: return the Preserve toothbrush to Recycline, we will grind it to make material for recycled plastic lumber. The Preserve's backward-sloping handle makes it easier to brush teeth and gum surfaces from all angles. Its ergonomic design encourages the brushing motion most dentists recommend, the Bass Technique. Developed with the direct input of leading Massachusetts dentists and periodontists, the Preserve is the only toothbrush designed to make it easy to use this preferred motion. Premium virgin nylon bristles by DuPont are shaped in the Preserve's tri-level design, then polished and end-rounded to help you gently remove plaque along the gumline.. (PRESERVE TTHBRSH,ULTRA by Recycline)