Black Mongoose mascot costume character dressed with a Button-Up Shirt and Berets from our Mongoose mascots. Whether you're dressing up for a costume party or for a special occasion, you can have a blast creating your own unique costume. Find the perfect accessories to complete your look, and add a little something extra to make your costume stand out. With a little bit of imagination, you can create a look that is both creative and stylish.. The Black Mongoose mascot costume character dressed with a Button-Up Shirt and Berets will be perfect for your Mongoose events. Many sizes available, premium quality, fully customisable with texts, logos, colors.