Firmly attaches to the horizontal and vertical bars of the walker * Flexible  retractable stabilizing arms lock onto the legs of the walker and eliminate excess swinging * The front of the basket has a slot for an identification card and the inside of the basket has a built-in glass  can or cup holder  a small compartment for coins or  medications and a trough for utensils  pens  straws or eyeglasses * No additional tray is needed * Assembled basket measures 16 1/4  x 8 3/4  x 8 1/4  (41.3 x 22.2 x 21 cm) * Made of polyproplylene *