$0.50 off any Powerade Zero = free bottle at King Soopers

Print your coupon for $0.50 off one Powerade Zero 32 oz. bottle here. 

This will net you a free bottle at any King Soopers store, which will double this coupon up to $1.00.  Since Powerade Zero is on sale for $1.00, it will be free after the coupon.