Please see my profile. I wore this during a 100km race. This is a timing chip from the Lake Saroma 100km Ultramarathon. - Event Name: 33rd Lake Saroma 100km Ultramarathon - Date: June 30, 2019 - Design: Features a design of the Lake Saroma scenery - Size: Approximately 5.5cm x 7.5cm - Features: Design with four holes I will answer any questions you have about the product to the best of my ability. I will reuse packaging materials I have at home. Shipping will be via standard mail. Thank you for reading my profile to the end. Thank you for your interest.