Brain teasers like this mind teaser puzzle inside a clear cube make great promotional giveaways. Your customers will appreciate the challenge this puzzle offers. A hit at conventions, trade shows and events. Take advantage of the promotional potential this has and give away these mind teaser puzzles. Not only a boredom breaker but a stress reliever too! Item comes in assorted colors only. Products are not intended for use by children or pets. They may present a choking hazard to children under 3 years of age.