PVC material: PVC material uses the instability of the spherical appearance and can effectively train strength, balance and core strength.
Non-slip washers: with 8 anti-slip washers on the back and 8 anti-slip washers on the bottom. There is no limit to training areas, even flat terrain is acceptable. 14 screws reinforced and fixed, non-slip washer.
Reinforced, thickened base: reinforced, thickened base, high safety, the thickness reaches 3.2 cm; stainless steel buckle, the buckle on the drawstring, safe and reliable. The non-slip texture of the base, the non-slip air plug does not leak for a long time and the non-slip texture is safer
2 Colors: 2 different colors to choose from, meet your different needs.