Helpful for individuals who have decreased coordination or need additional proprioceptive input during writing tasks. Can be used with any pencil grip, writing instrument, or coloring tool. Filled with 1/4 pound of (lead free) steel shot. Measures 3 ¾" long and 2 ½" wide and is made of stretchy material so it can easily wrap around and conform to the utensil shape. A Velcro piece fastens it. Hand washing and air drying are recommended. Weighs 3.9 ounces.