Size is approx: 78.0 by 6.0 by 2.3cmAdditional product info: Simply insert it into your smartphone case to use it as a multi-holder shoulder strap! The strap is adjustable for easy use. If you remove the strap, you can use the round carabiner to support the phone, attach it to a bag, and more.This product is suitable for ages 15 and above. Do not give it to infants as there is a risk of choking or strangulation with the strap. This product is a shoulder strap. Do not use it as a neck strap or wrap it around your fingers, as this is dangerous and may cut off circulation.The recommended size for the charging cable hole of your smartphone case is a width of 1015mm and a thickness (height) of at least 6.5mm. It can be used with a width of more than 15mm, but be careful, as the design sheet may slip out easily from the charging hole. Additionally, depending on the combination of smartphone and case, it may slip out easily even at the recommended size, so please ensure that it doesn’t come out easily by pulling the carabiner after attaching this product.Please do not engage in rough use such as running, jumping, or jumping down from high places while this product is attached to your smartphone. Excessive force may cause the smartphone to fall.