A dynamic aerobic device for stretching and improving the flexibility of the feet, formed by: a foot stretcher and a removable handle, as well as a strap that can be positioned either on the calf or above the knee so as to allow two different uses. The device includes: a central projection of suitable dimensions corresponding to part of the sole of the foot a coupling mechanism with an internal screw thread and an external channel a removable weight on the outsole of the foot stretcher and a securing elastic half-sock that is wider at the open end than at the closed end, said half-sock including convex faces and rounded edges and corners, having different densities, and being provided with a band on the upper edge of the open end.
