3 Pre-Programmed massage functionsShiatsu ™ Focused on soles and sides of feet with compression massage of calves (15 mins)Relax ™ A comfortable, more gentle massage focusing on calves with gentle massage of feet (15 mins)Quick ™ A short massage, primarily shiatsu, focusing on feet with some calf massage (5 mins)3 Adjustable Massage Strength Levels: HI, MID, LO3 Manual Massage Functions to focus massage on specific trouble areas3 Foot Size Adjustments: Small ( Mns 5 ™ 8), Medium (Mns 8 ™ 10), Large (Mns 11 & Up)Articulating base for easy adjustment into most comfortable positionIBWFM100