4 ergonomic carrying positions provide flexibility, safety, and comfort: Newborn Front (w/ insert sold seperately), Front, Hip, and Back Suitable for 15-45lbs. ?(7-15lbs with infant insert) Ergonomic bucket shaped seat provides baby with optimal positioning, knee to knee support, and a protected natural c-curved spine in all four carrying positions. Wide, supportive waistband and padded straps with perfect fit adjustors distribute weight comfortably and allow wearer to customize fit. Breathable mesh hood provides sun and rain protection, support for baby's head while sleeping, and privacy while nursing. Large zippered cargo pocket has ample room to store all your necessities for a truly hands free experience