nextx sit-to-stand learning walker, baby toys for toddlers, 4 in 1 baby walker nextx from baby steps to big steps the nextx sit-to-stand learning walker helps your baby develop from a crawler to a walker through adaptive technology. with a barnyard of playful friends to cheer them on, your little one will have endless fun as they learn to walk. start from sit & play to stand & walk, this baby prekindergarten toys encourages babies to sit to stand and learn to walk while developing their color & shape recognitions by the building block sets and rotatable beads, impoving their motor and speed control skills by pushing and pulling.