Transport Chair Wheelchair Airgo Comfort Plus XC TC, Black. SUB CATEGORY_Grooming Implements Professional Effects18 Levels WhiterRemoves Over Professional Effects18 Levels WhiterRemoves Over 15 Years of Stains in 3 DaysUse Once Per Day for 45 Minutes20 Treatments (Each With 1 Upper 1 Lower Strip)No Slip TechnologyPeroxide LayerEnamel Safe: Crest 3DWhitestrips™ Use the Same Whitening Ingredient as DentistsWith a Comfortable preferably with a meal and a glass of water Large 12" rear wheels with premium bearings for smoother rolling and increased comfort Unique footrests can be conveniently locked to the side of the frame for easy storage