Great for cleaning your rubbers, has small sponge on the tip to evenly spread out the solution, 75ml, don't apply too much, just enough to get the dusts out, if the sponge gets dirty, put it under running tap, and squeeze the sponge as you are washing it, then squeeze all the water out before putting back the cap, make sure the cap is always on, recommended storing it separately or in zip lock bag to prevent leak inside your sports bag.