Ergobaby Alta Hip Seat2 in 1 design works as hip seat or baby carrier suitable from 4 48 months, 5. 5 20. 4 kg breathable mesh helps keep baby and parent cool ergonomic bucket seat supports baby's hips wide padded waistband helps distribute weight evenly supports front inward, front outward and back carry hip seat mode supports front and hip carry positions large storage pocket keeps phone or keys nearby