Chew Stixx Junior is a "pocket-size" version of the Original Chew Stixx! Chew Stixx Jr is hollow, therefore it offers a crush and release type compression. Also includes many stimulating bumps that are ideal for sensory seekers, children with oral defensiveness, and chewing disorders. All Chew Stixx Products are dishwasher safe, or can be washed with soap and water to prevent bacteria build up. All materials and colors are FDA approved. Latex and PVC free. Dishwater safe. 4 ½ L. Use with adult supervision.