The Crayola Crayons 24 Mini Twistables Special Effect Crayons are a set of creative toys suitable for children. These crayons come in a compact size with a twistable design, making them easy to use and mess-free. The special effect crayons offer a unique way for kids to express their creativity through painting and drawing activities. With dimensions of L 7.8 x W 3.82 x H 1.5 inches and a weight of 0.4 pounds, this product is portable and convenient for on-the-go artistic fun. Released in 2010, these crayons provide a range of vibrant colours and effects for young artists to enjoy.