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 movement. 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. Fits most walkers. Assembled basket measures (l x w x h) 8-1/4 x 16-1/4 x 8-3/4" (21 x 41.3 x 22.2 cm). Made of polypropylene plastic.