This harness has a multitude of uses! It not only keeps children safely seated in a shopping cart, stroller or high chair, it also keeps older children nearby while walking in crowded public places. While walking, a parent may choose to use the full harness or use only the tether portion, attached to their child's wrist. The four-piece set includes an adjustable harness (fits 9 month to 4 years old), two chair restraint straps, and an adjustable length tether strap. This harness is an absolute must for those kids that seem to "instantly disappear" in busy shopping malls, amusement parks or airports.