Detachable shoulder straps that keep your lumbar pack secure against your back. Strapettes are compatible with the Day, the Tour and Travel Trunks.
Amazon.com Product Description
Convert your classic and recycled lumbar pack or Travel Trunk into a versatile daypack with this handy shoulder harness. The Strapette harness is lightweight and easy to fit, with adjustable foam shoulder straps and an adjustable sternum strap helping distribute the weight evenly across your body. As a result, you can carry heavier loads in your lumbar pack without suffering from back pain. The Strapette harness--which is compatible with Mountainsmith's large, extra-large, and extra-extra-large Day, Tour, and Travel Trunk packs--weighs 0.3 ounces.