Looking for an excellent backpack, one that is all weather, does any one have any suggestion? If you have one and it works please would you provide specs on it and if possible maybe some Pics?

Try a GI Large Ruck sack w/ frame. It works, 23 yrs for me anyway

like one your gonna use for school? camping? going to war? Like said before, if you want something thats cheap and all weather, a GI  Alice pack, they sell them in small amd medium sizes as well and will work for most of that you need.

i have been using the storm 3600 from kelty and have been very happy with it. i do not know what size you are looking for or its intended purpose, but for a multi day pack that is tough and waterproof it works well i upgraded to this pack from an old military surplus wich also worked well. i wanted something with a hydration bladder

Size: Regular
Torso Fit Range: 12 - 18" / 30 - 46 cm
MSRP: $145.00

Usage: Backcountry
Suspension: Internal adjustable

Specifications:
Volume: 3600 in3 / 59 liters
Weight: 4 lb. 3 oz. / 1.9 kg
Dimensions:
Length: 34" / 86 cm
Width: 16" / 41 cm
Height: 12.5" / 32 cm

Materials:
Body Fabric: 210D nylon mini-shadow ripstop
Reinforcement Fabric: 600D polyester kodra and 500D nylon kodra

Packbag Features:

Three-liter Taste-Free™ hydration system included
Daisy chain
Reflective accents
Ice-axe loop
Outer mesh stash pocket
Security pocket
Side compression straps
Top-panel loading
Shovel pocket
Mesh water-bottle pockets
Lash tabs
Load compression strap
Spindrift collar
Reservoir sleeve
Suspension Features:

Breathable backpanel with Spacermesh
Sternum strap
Adjustable suspension
Padded two-layer shoulder straps
Belt stabilizers
LightBeam™ aluminum stays
HDPE frame sheet
Load-lifter straps
Scherer Cinch™ (US Pat #5,465,886)
Padded three-layer waistbelt

Look in here. Lots of useful info.