Is this bag water proof/ water resistant?

Tech Specs:

Material:

420D Velocity nylon 

Dimensions:

9 x 11 x 18in (23.25 x 28 x 45.5cm) 

Camera Type:

Small to large SLR 

Suspension:

Yoke-style contoured shoulder straps 

Rain Cover:

No 

Access Types:

Top, side 

Pockets:

[External] 2 side, 1 top, 1 front ; [Internal] 1 with cord exit port 

Internal Dividers:

Adjustable padded dividers 

Dedicated Computer Sleeve:

Yes,–15.75 x 13.25x 1.75in (40 x 33.7 x 4.5cm) 

Weight:

3 lb 3oz (1500g) 

Recommended Use:

Photography 

Manufacturer Warranty:

Lifetime 

Country of Origin:

China