This is a auto-rebound AB roller with eblow support.
Features:
1)Eblow support design - The main force point is the arm;
2)Auto-rebound design - The Abdominal Exercise Roller has a built-in, highly flexible, silent spring thatsprings back automatically. Protect muscles and prevent sports injuries.Even beginners can use it easily!
3)Widened & Dual wheels design - The wider track increases stability andeffectively reduces shaking!
4)Stay entertained - The built-in mobile phone holder allows users to listento their favorite tunes, shows and sport quide.
