BEST SELLER A fiercely fun Halloween starts with our dynamo Dilophosaurus costume. Just like the real dino, it features big teeth, a flared neck and a spiky tail enhanced with battery-powered lights for a festive, high-visibility glow. The comfy tie-dyed fabric has Velcro closures for easy on/off. DETAILS THAT MATTER Two-piece design includes jumpsuit and Dilophosaurus hood. Includes fun dimensional details like the spikes running down back that light up with 17 LED bulbs (included). Battery pack includes a CR2302 Button Lithium Battery and has on/off switch. Costume is made from 100% polyester in tie-dyed fabric with Velcroclosure and elastic on leg openings. Hood is made from 100% polyester with White Felt for teeth can foil fabric for spikes on back. Filled with 100% polyurethane. Undergarments are not included. THIS SET INCLUDES 1 Jumpsuit and 1 hood. DIMENSIONS Size 4-6 Years Neck: 11" diameter Chest: 30" circumference Shoulder (seam to seam): 11.5" wide Armhole: 6" Sleeve: 22.5" long Waist: 30" relaxed Hips: 16" wide Trunk Length: 23.5" long Leg: 7.25" wide (opening) x 17" long (inseam)