What Am I

I used to belong to someone.

I came in a pair.

I helped them through the weather.

I helped them walk down stairs.

Sometimes I come with strings.

Sometimes I come with pumps.

I look great with a pair of jeans.

I helped my person jump.

But now Im laying lonely

Without my better half .

Soon to be scooped up by a truck

To be put into the trash!

What am I?

I am a dirty sneaker laying on the curb.