THE STRAPS ARE REINFORCED WITH SPONGES, SO AS TO MAKE AN ANATOMICAL GRIP ON THE SHOULDERS.THE UPPER PART OF THE BACKPACK IS REINFORCED WITH SPONGES, SO AS TO MAKE AN ANATOMICAL GRIP ON THE BACK.EXTERNALLY HAS TWO SIDE LOOPS THAT CLOSE WITH ZIPPERS, AS WELL AS A SMALL FRONT ONE, WHICH ALSO CLOSES WIT..