This military backpack is designed with a focus on durability, functionality, and versatility. 

1. **Comfortable Wearing:**

   - Material: 900D material for durability.

   - Size: 19.7''H X 12.2''L X6.3"W. (50*31*16cm)

   - Characteristics: Durable, soft, water-resistant, and comfortable for extended wear.

2. **Compact and Spacious:**

   - Main Compartment: Can accommodate up to a 14" laptop or tablet, magazines, clothing, or books.

   - Front Small Zipper Pockets: Organize small items like keys, pens, and phone.

   - Side Pouches: Fit for small water bottles, tools, or umbrellas.

3. **Front & Side Molle System:**

   - Molle System: Designed with a front and side molle system.

   - Expansion: Allows for easy attachment of additional molle pouches or gear to expand capacity.

4. **Enhance Outdoor Activities Safety:**

   - Reflective Straps: Designed with reflective straps for enhanced visibility at night.

   - Safety: Increases safety during activities like hiking and cycling by making it easier for others to notice you in low-light conditions.

5. **Multiple Ways for Using:**

   - Versatility: Can be used as a 3-day assault pack, bug out bag, range bag, hunting backpack, survival backpack, army backpack, trekking backpack, or day pack for daily use.

Overall, it seems like the Pickag military backpack is a well-rounded option suitable for various outdoor activities, offering durability, organization, and safety features. Users can customize it according to their needs with the molle system, making it adaptable for different situations.