The Ian Robbins Memorial Trick or Treat in the Heat is back for an eleventh year, with seven participating neighborhoods in Anchorage, the Valley and Valdez.

Ian Robbins

Ian Robbins

Sunday night’s event allows families to enjoy trick-or-treating in costume without the snow gear needed for an Alaska Halloween.

The event was started in 2005 with an impromptu block party for 5-year-old Ian Robbins, who was diagnosed with leukemia, his father, Sean Robbins, told KTVA at the original event. Organizers wanted to give Ian one more chance to trick or treat before he passed away a few weeks later.

“However, all participants had so much fun that it is now a highly-anticipated neighborhood-wide party and charity fundraiser,” organizers wrote on the event’s website.

At Kempton Hills, one of the participating neighborhoods, a block party is scheduled to begin at 4:30 p.m., followed by the trick-or-treating event, which runs from 5 p.m. to 7 p.m. at each participating neighborhood.

Wristbands are $10 for kids and all proceeds go to charity, according to the event’s organizers. This year’s supported charities are the Make A Wish Foundation, the Hospice of Anchorage and Ronald McDonald House charities. Proceeds from Valdez wristbands sales will be donated to the American Cancer Society.

KTVA 11’s Dave Goldman contributed to this report.