Backpack Structure: There is a patch pocket on each side of the chest pocket, which can hold umbrellas, water, or glasses. The shoulder straps are light and take the pressure off the shoulders. Adjustable padded shoulder straps make this backpack fit for most people. 

Lightweight and Durable Strap Backpack: This casual one-shoulder strap backpack is made of lightweight, breathable, and durable polyester material, splash-proof, wrinkle-resistant, effective against tearing, getting wet and tearing, suitable for women and men, perfect for a day at the theme parks and more.

Measurements:

The bag is 16" in height, 10" in length, and width is 4"

The strap is adjustable from 31" to 40" in length and can be hooked for either the left shoulder or right shoulder for added comfort.

Details:

The bag has a smaller front pocket with a zipper, 2nd pocket area with a clip at the top to close, and then another larger area with a zipper.  There is also a mesh pocket on each side that can accommodate a water bottle, cup, umbrella, and more.