The burglary happened at 11:44 p.m. Monday at the store in 1300 block of Windrim Avenue.
Police say the suspects forced open a rear bay door.
Once inside, the three allegedly took several six-packs of soda and cookies.
Investigators say the total value of the items stolen was about $30.
The three suspects then fled on foot.
They were described by police as:
Suspect #1: Black or Latino male, 5'0" tall with a thin build, 12 to 14 years old, wearing a red/white horizontal striped shirt and dark colored jeans.
Suspect #2: Black male, 5'3"-5'5" tall with a thin build, 12 to 15 years old, wearing camouflaged colored shorts and carrying a blue/black and red horizontal striped shirt.
Suspect #3: Black male, 5'8"-5'10" tall, 14 to 16 years old with a thin build, wearing a dark colored hooded sweatshirt and dark colored pants.
Anyone with information is asked to contact Philadelphia Police at 215-686-TIPS (8477), text a tip to PPD TIP (773847) or through PhillyPolice.com.