Your search for "sling bags" revealed the following:

This rugged little sling keeps your everyday gear at hand, and out of your pockets, while you're out adventuring.

The SACOCHE_01 is an ultra-minimal pack made for your essentials and designed to be worn under or over a jacket. It’s a simple and minimal flat pack with just enough space for an iPad mini, your phone, wallet and keys....

Stay agile and organized with this lightweight, packable travel sling. Easy-access pockets sort your essentials, the discreet rear pocket keeps your passport at hand, and the detachable strap can be removed to make it a pouch. Available in 1L and...

The DESI packs a host of big functionality into an ingeniously small and compact design. Special compartments neatly accommodate your daily necessaries, including your mobile phone, wallet, and even your favorite book or diary! The front flap employs a simple...

Hands down the best sling pack. Ever. Packed with iconic Pacsafe anti-theft features like cut resistant fabric, lockable zippers, RFID blocking pocket, and a cut resistant shoulder strap, you know your bag, valuables, and identity are safe. The wide opening...