It happened after 4:00 p.m. on November 5th in the 4400 block of North Fairhill Street.
Surveillance video shows a man parking a dark-colored sedan, getting out and approaching a red SUV.
After looking inside, police say he broke the window and took the owner's book bag, which contained school books, identification and a MacBook laptop computer in a purple case.
Investigators are looking for a white or Hispanic male, heavy build in his early to mid-20s. He was wearing a dark long coat and a white t-shirt with a large print on front.
Anyone with information is urged to contact Philadelphia Police at 215-686-TIPS (8477), text a tip to PPD TIP (773847) or through PhillyPolice.com.