There are three types to choose ：

1.Standard:

AB Wheel Roller*1
Kneeling pad*1 

 2.Deluxe:

AB Wheel Roller*1
Elastic rope*1
Kneeling pad*1
Storage bag*1  

3.Ultimate:

AB Wheel Roller*1

Parameters:
Steel pipe: thickening steel
Handle: soft foam
Roller inner ring: environmental engineering plastics
Bearing capacity: 100KG
Wheel diameter: about 6cm/ 2.36"
Applicable people: fitness enthusiasts