Customers appreciate the product's appearance and design, noting that the ice balls look great in drinks and are fun for both adults and children. The size is generally considered appropriate, though some found them smaller than expected. Opinions on ease of use are mixed, with some finding them fun and easy to use, while others struggle with filling the trays and determining the fill level, leading to half-circles. The value is seen as positive, with customers feeling the product is worth the effort for its unique appeal.