The Nested Bean Zen Sack was introduced as an innovative sleep solution for infants, featuring a gently weighted center to mimic a parent's touch and help babies sleep longer. The brand gained popularity among parents seeking safe, effective sleep aids that comply with safe sleep guidelines. Zen Sacks are valued by new parents for their ability to ease the transition from swaddling while providing comfort and security. The weighted design has made Nested Bean a recognized name in the baby sleep product market. Used but like new no stains rips and zipper works as it should.