Hip Flexor Attachment set for use with the Vertimax training systems. Three sizes/colors available: Youth/red (athlete height 4ft 7in to 6ft 2in), Medium/blue (athlete height 5ft 7in to 6ft 6in), and Large/gray (athlete height 6ft 4in to 7ft).

Comes standard with the purchase of V4, V6, V6+ and V8+ training systems. To speed up 'team' training or accommodate smaller & larger athletes, many users order a 2nd or 3rd set of accessories.