Size is approx. 57.0 by 2.0 by 1 cm Additional product info: It’s a neck strap equipped with a length adjustment slider part that allows you to adjust to your preferred length, and a safety part that separates the strap when a strong force is applied. – The recommended age for this product is 15 years and older. Do not give it to infants or young children, as there is a risk of choking or strangulation with the strap cord. – Do not wrap the strap cord around fingers or other parts of the body. It is dangerous as it can stop blood circulation. – Do not engage in rough activities like running, jumping, or jumping from high places while the smartphone is attached to this product. Excessive force may cause the smartphone to fall.