Size is approx. 57.0 by 2.0 by 1cmAdditional product info: This neck strap is equipped with a length adjustment slider part that allows you to adjust it to your preferred length, and a safety part that separates the strap when strong force is applied.- The recommended age for this product is 15 years and older. Please do not give it to infants or toddlers due to the risk of choking or strangulation with the strap cord.- Do not wrap the strap cord around your fingers or body. This is dangerous as it can cut off circulation.- Avoid using this product roughly, such as running, jumping, or jumping from high places while a smartphone is attached to it. Excessive force can cause the smartphone to fall.