The Simple Pouch by Aer.

Details
• Ultra400X exterior by Challenge Sailcloth
• YKK® waterproof zippers
• Simple organization for your everyday essentials
• Back slip pocket for your wallet or phone
• Removable quick-adjust shoulder strap for left or right shoulder use

Dimensions
Length: 9.25" (23 cm)
Width: 7.25" (18 cm)
Depth: 0.75" (2 cm)
Volume 0.6 L
Weight 0.2 lbs