Color Changing Neon Yellow Rubber Duck.  Photo-chromatic vinyl changes color when placed in UV sunlight.  Makes squeaking sound.  
 
Approximate Size: 3 3/8" W x 3 1/4"H x 3 1/8"LS.  
Materials: Made of vinyl. Lead-free and phthalate-free.
Caution: Small toys pose a choking hazard to children under the age of three. Use proper supervision.