Pottery Barn Monsters Inc. Boo Toddler Costume. No Longer sold in stores, has been discontinued! Brand New, I originally bought for my toddler but it did not fit. DETAILS THAT MATTER This stunning costume was created with attention to every tiny detail so it's realistic and fun to wear. Costume is made of 100% polyester jersey, felt, rope, TC with 100% TPU coating. Lining is made of 100% polyester TC. Velcro closure on back and around the neck of costume. Elastic casing on pants. Our costume is finished in garment-quality stitching and construction so it can be handed down to siblings and worn for years to come. Undergarments are not included. Costume is yarn-dyed – Fibers are treated individually with environmentally safe dyes before weaving to offer vibrant, lasting colors.