Armour of Agility

While this breastplate is holding a charge and is worn, you gain +5ft to your total movement speed

A sudden alertness to imminent danger causes a burst of speed, allowing you to automatically succeed a Dexterity save you must make. This charge is restored after a long rest.

Once this charge has been used you lose the 5ft bonus speed till the charge is restored.

This armor consists of a fitted metal chest piece worn with supple leather. Although it leaves the legs and arms relatively unprotected, this armor provides good protection for the wearer's vital organs while leaving the wearer relatively unencumbered.

Notes: any class proficient in medium armour