The Ultimate Fitness aerobic step features a non-slip surface, and comes with two risers for each side.

The Step itself is 43" L x 16" W x 4" H.
Each set of risers will raise the height by 2" and this step comes with 2 sets of risers.

If you put the complete set together, the total dimensions are 43" L x 16"W x 9"H.

The Ultimate Fitness aerobic step features a non-slip surface, and comes with two risers for each side.

The Step itself is 43" L x 16" W x 4" H.
Each set of risers will raise the height by 2" and this step comes with 2 sets of risers.

If you put the complete set together, the total dimensions are 43" L x 16"W x 9"H.