The MamaRoo Baby Sling is a truly unique sling. Fully adjustable, it can be used as either a single or double shoulder sling, with the comfort of a wrap and the carrying convenience of a front-pack. The weight is distributed evenly over both shoulders when worn as a double sling, making the MamaRoo the perfect solution for baby wearers who prefer more support than the one-shoulder slings provide, or for baby wearers with back problems.