Customers find these coasters visually appealing, with one noting the unique design on both sides, and appreciate their quality and suitability as gifts, particularly for neuroscientists and cardiologists. They serve as great conversation pieces and are fun to use, with one customer mentioning they enjoy re-stacking them. While some customers consider them a great value, others find them overpriced. The durability receives mixed feedback, with some finding them very durable while others report issues with peeling decals.