Why Simple Series? Dog harnesses have gotten complicated. We get it, with so many different choices, it can get exhausting to choose the right one. A dog harness at its core should be easy to use, comfortable, and durable. This is what we had in mind when designing our Simple Harness Collection, a set of basic yet effective harnesses that get the job done. Get ready for that daily walk in a matter of seconds, not minutes. Why Simple Step In? Simple Step In is the only step-in harness in our simple collection. This is right for you if your pup is sensitive to an over-the-head harness. Step in, and buckle up. With these two simple steps, you and your pup will be ready for that walk in no time.