Mini:

• 10"w x 7"h x 2.5"d
  
• 10" handle drop
• zip closure

Small: 

• 11"w x 7.5"h x 2.5"d
• 9" handle drop
• zip closure

Medium: 

• 14"w x 10.5"h x 4"d
• 9" handle drop
• zip closure

Large:

• 16"w x 13"h x 5"d
• Handle drop: 9in
  
• Zip closure
  
• Laptop pocket
  
• 2 slip pockets