Exterior construction details:

The bag is equipped with 2 separate organza side pockets on both sides of the bag, which can hold umbrellas, mugs and other items. The top compartment has a quick-access compartment for your wallet, cell phone, and other small items. The main pocket is equipped with small ears on both sides to hold trekking poles. S-shaped shoulder straps on the back prevent the pack from slipping off, and padded foam inside the straps relieves back discomfort and improves comfort. The shoulder straps are equipped with shoulder/lumbar buckles to prevent the pack from slipping off, and the reflective webbing allows for clear visibility at night for high safety. 

Internal structure details:

The main pocket is equipped with an independent water pocket and a storage sling pocket, and the water tube is able to be used through the top outlet, thus making it easy to drink while carrying the backpack. The back panel is equipped with a pressure-reducing spine protector, which can effectively relieve the pressure on the back, and with a large area of sandwich mesh, it can significantly improve the overall breathability and get rid of the stuffy feeling.