Your child can become his favorite alien from Ben 10 when he goes in this muscle chest Humungousaur costume! The boys alien costume has a green jumpsuit with a black stomach and screenprinted details on the chest, like spikes and the Ben 10 symbol. The jumpsuit has foam muscles on the chest and arms for a bulked up appearance, as well as a foam insert for the chest for even more muscles! There is elastic at the waist for a good fit, and it secures in the back with handy Velcro. The Humungousaur half mask is made of plastic and has holes for the eyes, nose, and mouth as well as molded details like spikes on top of the head. The mask stays put with an elastic band that goes around the head. This Humungousaur costume is going to transform your child into the powerful alien this Halloween!

Size	Chest	Torso	Length	Waist
Small	26"	23"	41"	20" - 26"
Medium	28"	23 1/2"	44 1/2"	22" - 28"
Large	31"	27"	53 1/2"	23" - 28"
*Note: Measurements are of the actual item. We recommend adding 3-4 inches for movement, except for form-fitting costumes.

How to take your measurements