The 11 different Bbiamsleep Plastic Assembly Brain Teaser Puzzles are a set of innovative toys designed to challenge the mind and improve problem-solving skills. Made from durable plastic, these puzzles come in a variety of colors and feature unique designs that require disassembly and re-assembly to solve. With the brand's focus on creating engaging and educational toys, these puzzles offer a fun and entertaining way to stimulate the brain and enhance cognitive abilities. Perfect for puzzle enthusiasts of all ages, these brain teasers provide hours of mental stimulation and enjoyment.