I am very easy to get into, but it is hard to get out of me. What am I?

Question

I'm a shape shifter varied in colour and size
But when you see me I'm easy to recognize

At times a shady character, other times not
I might be able to help you in a hot spot

Usually unemployed in the season of cold
But working year-round if you are willing to hold

With your assistance I act as a lightweight shield
So as to counteract what the heavens may yield

What am I?

Answer 1

Trouble.

Answer 2

The Result: Prison cells

Answer 3

Ans: labyrinth

Answer 4

A Maze is the answer