The NEW Dog S/M Halloween Costume Bat Wings by Boots & Barkley is the perfect accessory for your furry friend to celebrate the Halloween season. These reflective bat wings in black are designed for dogs up to 40 pounds and are easy to attach for a fun and festive look. costumes are a great way to involve your pet in the holiday celebrations and this costume is sure to make your pup look adorable and ready for Halloween parties or trick or treating.