Size is approx: 17.0 by 10.3 by 1cmAdditional product info:A multi-holder, soft silicone bracelet that can also be used as a hand strap. You can attach a strap or hold a smartphone just by inserting it into a smartphone case. The carabiner part can be used for various purposes, such as hanging glasses, keys, and masks, or attaching them to bags or belt loops.Handling Precautions:- It is recommended to have a smartphone case charging port size with a width of 10-15mm and a thickness of at least 6.5mm. Depending on the combination of the smartphone and case, it might come off easily even within the recommended dimensions.- Do not wrap the silicone bracelet around fingers or other body parts. It is dangerous as it may block blood circulation.- If you experience any allergy symptoms or abnormalities on the skin, stop using it immediately and consult a doctor.The smartphone is not included.