Download Collider View FREE Unity. 

Never make a collider the wrong size again!

Take the guesswork out of debugging collisions with Collider View. This handy tool lets you visualize 2D & 3D capsule, sphere, box, and mesh collision primitives in the Unity editor Game View and in-game builds.

Features:

– Works in Unity & Unity Pro

– Completely C# and shader script, no DLLs or external assets needed