Laptop Sleeves for HP Pavilion 13 14 15.4 17 12.1 Notebook Sleeves + SumacLife TM Wisdom Courage Wristband 10" External Case Dimension: 11 5/8 x 8 1/2 Inch Interior approximate dimension: 10 1/2 x 7 3/4 12" External Dimension (WxH): 12 3/4 x 9 3/4 Inch. Interior approximate dimension: 12 x 9 1/8". 13" External Case Dimension: 9 3/8 x 13 1/2 Inch Internal Case Dimension: 8 3/8 x 12 1/2 Inch 14" External Case Dimension: 14 1/4 x 11 1/2 Inch Internal Case Dimension: 13 1/2 x 11 Inch 15" External Case Dimension: 15 1/8 x 11 1/2 Inch Internal Case Dimension: 14 1/2 x 11 Inch. 17" External Sleeve Dimension: 17 7/8" x 13" Internal Case Dimension: 16 7/8 x 12 Inch