• Overall Size: 19"(H) x 11"(W) x 11"(D)
• 37L
• External dimensions:19"(H) x 11"(W) x 11"(D)
• Waist belt MAX:45 Inch
• Chest belt MAX:60 Inch 

Features: 

• Huge expandable main compartment - with interior meshed enclosure for small gear 
• Large middle compartment - Zippered interior small gear pouches 
• Two Medium and small compartments for smaller gear 
• Side and Top cinched down gear security straps 
• Numerous Molle Loops 
• The Backpack is constructed by water proof 900D material