Bottoms Up® 6 Top Plastic Flight Tray. Designed to hold four (6) 5oz Taster Mugs, this stackable, lightweight, tray makes beer flights, tastings, and sample pours easy to carry, easy to serve, and easy to love. Perfect for breweries, bars, taprooms, events, and anywhere storage is tight and flights are sold. Mugs sold separately. Hand Wash Only.