Size is approx; 10 by 10 by 10cmAdditional product info; Acrylic Charm Shoulder Strap! Colors Match The Image Of Pokemon. Compatible Smartphone Case Design:Usable: Bottom Center Open By 12mm Or MoreNot Usable: Bottom Completely OpenAttachment Method: 1. Set The Strap Sheet Into The Smartphone Case And Let The Flap Of The Sheet Come Out From The Case.2. Attach The Smartphone To The Case.3. Attach The Carabiner To The Bottom Of The Sheet.