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Fitting Backpacks

Torso Length Reference Tables

All recommendations, all tables, and all tables of specifications for White Mountain™ Internal Frame backpacks, assume that you have Measured your Torso Length in a Straight Line.

The following tables were updated in December 2007 after further research into the correlation between Frame Length, Lower Back Length, Torso Length and Spinal Curvature. All recommendations for Backpacks, matching Frame Length or Torso length, were then also updated. Remember the incremental adjustments on the White Mountain™ backpack harness systems assume that you have measured along the curve of the spine. Therefore, if you measured your Torso Length in a straight line, simply add 3 cm when making the Torso Length adjustments on all White Mountain™ Backpack Harness Systems.

What is the Optimum or Medium Torso Length for each White Mountain™ Backpack?

All tables are stated using a Torso Length Straight Line Measurement

Alpine 55

50 cm

19 1/2"

11 cm

4 3/8"

38 cm

Alpine 65

55 cm

21 1/2"

12.00 cm

4 3/4"

42 cm

Main Peak 75

60 cm

23 1/2"

12.50 cm

5 1/8"

46 cm

Main Peak 85

65 cm

25 1/2"

13.00 cm

5 1/8"

50 cm

Pacific 60

55 cm

21 1/2"

12.00 cm

4 3/4"

42 cm

Euro Travel 60

55 cm

21 1/2"

12.00 cm

4 3/4"

42 cm

Holiday 60

55 cm

21 1/2"

12.00 cm

4 3/4"

42 cm

Antarctica 65

Euro Travel 70

60 cm

23 1/2"

12.50 cm

5 1/8"

46 cm

Holiday 70 (SHS)

60 cm

23 1/2"

12.50 cm

5 1/8"

46 cm

Antarctica 75

60 cm

23 1/2"

12.50 cm

5 1/8"

46 cm

Euro Travel 80

65 cm

25 1/2"

13.00 cm

5 1/2"

50 cm

Pacific 80

65 cm

25 1/2"

13.00 cm

5 1/2"

50 cm

Holiday 80

65 cm

25 1/2"

13.00 cm

5 1/2"

50 cm

What is the accepted Backpack Size for each Stave Length?

Extra Small

38 cm

15 0/0"

45 - 55 litres

2,746 - 3,356 cu in

Small

42 cm

16 1/2"

55 - 65 litres

3,356 - 3,967 cu in

Medium

46 cm

18 1/8"

65 - 75 litres

3,967 - 4,577 cu in

Large

50 cm

19 3/4"

75 - 85 litres

4,577 - 5,187 cu in

Extra Large

54 cm

21 1/4"

85 + litres

5,187 + cu in

These measurements are calculated measuring the Torso in a Straight Line

What is the Recommended Torso Length Range for each Internal Stave

Stave Size

Stave
Length

Optimum/Medium
Torso Length

Recommended
Torso Length Range

cm

Inches

cm

Inches

Extra Small

50 cm

38 cm

15 0/0"

34 cm to 46 cm

13 3/8" to 18 1/8"

Small

55 cm

42 cm

16 1/2"

38 cm to 50 cm

15 0/0" to 19 3/4"

Medium

60 cm

46 cm

18 1/8"

42 cm to 54 cm

16 1/2" to 21 1/4"

Large

65 cm

50 cm

19 3/4"

46 cm to 58 cm

18 1/8" to 22 7/8"

Remember each White Mountain™ backpack can be adjusted to one size smaller or to one stave length shorter.

This is done as follows:

1. Bending the top 5 cm of the Internal Stave away from the head at approximately 50 to 60 degrees,
2. Positioning the Upper Load Stabilizer Strap 5 cm lower using the ‘Upper Load Stabiliser Strap Lower Adjustment Buckle’ on the backpack.

We are then using an Internal Stave size and overall harness length that is the next size smaller. This then allows the following range of adjustment for each backpack.

What is the Maximum Torso Length Range for each White Mountain Backpack

Stave Size

Stave
Length

Optimum/Medium
Torso Length

Maximum
Torso Length Range

cm

Inches

cm

Inches

Extra Small

50 cm

34 cm & 38 cm

13 0/0” & 15 0/0"

26 cm to 46 cm

10 1/4" to 18 1/8"

Small

55 cm

38 cm & 42 cm

15 0/0” & 16 1/2"

30 cm to 50 cm

11 3/4" to 19 5/8"

Medium

60 cm

42 cm & 46 cm

16 1/2” & 18 1/8"

34 cm to 54 cm

13 3/8" to 21 1/4"

Large

65 cm

46 cm & 50 cm

18 1/8" & 19 3/4"

38 cm to 58 cm

15 0/0"  to 22 7/8"

These measurements are unique to the White Mountain™ range of backpacks and take into account the allowable adjustment available on each backpack after construction of the harness system.

This page was last updated on Sunday, 07 December 2008

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