Disick and Kardashian took their kids to a winter wonderland on Monday

By Aurelie Corinthios
Updated December 07, 2016 09:21 AM

It’s a West Coast Winter Wonderland!

Scott Disick took to Instagram on Tuesday to share an adorable peek at his afternoon sledding with his three kids.

“Fast times,” he captioned a picture of himself sliding down a snowy slope in an inflatable candy-cane striped tube, with his son Reignwho turns 2 next week! — nestled in his lap, while simultaneously holding onto a tube carrying his eldest son Mason, 6, and daughter Penelope, 4.

It appears that Kourtney Kardashian was also present for the fun-filled activities on Monday. Earlier in the day, she and Disick were spotted at Malibu Country Mart together, and the Keeping Up with the Kardashians star later shared her own picture with Reign, showing off the adorable tot’s swingy high ponytail.

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Though Disick, 33, and Kardashian, 37, ended their nine-year relationship in July 2015, they have remained close while they co-parent their three kids and last month PEOPLE confirmed that the two are living together again.

At the time, a source told PEOPLE that Kardashian is still being “cautious” with her heart and “doesn’t want to say that they are back together until she knows for sure that Scott is fully committed to his family.”

But so far so good, according to the insider: “Scott has been amazing to Kourtney, and she is very happy.”