Reinforced with DuPont™ Kevlar® fiber, this extremely durable soft sand disc keeps its shape due to its heavy-duty construction.   Filled with steel sand, the shape enhances work outs due to the shift of the sand during use.  Soft weight prevents damage to the user and to the floor.

Kevlar® is a registered trademark of E. I. du Pont de Nemours and Company used under license by XD Fit™.