The official jackets for the 2014 Boston Marathon have been unveiled by adidas, the official apparel supplier for the event.

The Celebration Jacket and other items in the 2014 Boston Marathon collection are on sale now online ($110) and will also be sold at select retailers and at the John Hancock Sports & Fitness Expo at this year's Boston Marathon April 18-20. A percentage of the proceeds will be donated to The One Fund Boston.

About 36,000 runners are expected to start the 2014 Boston Marathon on April 21.