Earth-Friendly And Easy To Handle: Thanks To Replacement-Head Technology And A Handle Made From Repurposed Materials, The Source Reduces Waste By 93%. When You’Re Done With One Of Its Patented, Gum-Stimulating Heads You Simply Swap It For Another. | Replaceable Heads With Premium Bristles: The Source Cuts Back On Plastic Usage While Simultaneously Boasting A Unique Curved Bristle-Bed, Ensuring Our Sumptuously Soft Bristles Clean And Massage The Gum Rather Than Aggravating Them. | Longer Neck For A Better Reach: The Source Has An Unbreakable Slim Neck That’S Longer Than Your Average Toothbrush To Provide Maximum Reach In Tight Spaces. | Upcycled Natural-Feel Handle: The Elegant, One-Of-A-Kind Handle Is Composed Of Repurposed And Recycled Materials — Like Wood, Paper And Even Recycled Dollar Bills — For A Beautiful, Natural Look And Feel. | Reversible Handle Design: As User-Friendly For Lefties As It Is For Right-Handed Brushers, The Ergonomic Design Helps Reduce Pressure On Teeth And Gums For Optimal Oral Health.