Things looking a little different around here?

In our mission to create the best load carrying equipment in the world, we’ve set out to achieve the best fitting, most comfortable pack harnessing systems possible. Over the last few years, we’ve spent countless hours measuring and fitting hundreds of different body types and logging the results to better understand how our customized fit interfaces with all different body types. The result has been a new sizing configuration that fits just about every human out there an unifies MYSTERY RANCH pack sizing across the board.

Frequently-Asked Questions

No, the volume of the bag does not change. The only feature of the pack that can change between different sizes is the yoke and the waist belt.

We recommend sizing down if you are between sizes. It is very important that the waist belt is able to securely tighten around your hips. If your waist belt is too big you will have a hard time getting the weight in your pack to transfer from your shoulders to your hips.

Yes, the size range that we list on our size chart is not the minimum or maximum adjustment for the yoke and waist belt. There is a little extra adjustment available to accommodate additional layers.

Yes, please give customer service a call to inquire about our custom size program at 1.833.548.1999

For any additional questions on fitting, please contact Customer Service at 1.833.548.1999.

Getting Your Size

The key to a confortable pack load is the properly fitting backpack. We've designed a more custom fit into our packs with simple sizing based off two measurements. To find the appropriate size waist and york for your pack, collect the following two measurements, then reference the sizing chart below.

1
Waist Circumference
Measure around your waist just above the top of your hip bones (roughly two fingers below your belly button).
2
Torso
Use a tailors tape measure or string and have a friend measure between the bony bump at the base of your neck (C7 vertebra) to the spot on your spine that is just behind your belly button.
Men's/Unisex Framed Sizing
XSSMLXL
TorsoWaistTorsoWaistTorsoWaistTorsoWaistTorsoWaist
XS/S13 - 18 in33 - 46 cmXS/S26 - 32 in66 - 81 cmS/M15 - 20 in38 - 51 cmXS/S26 - 32 in66 - 81 cmS/M15 - 20 in38 - 51 cmS/M31 - 36 in79 - 92 cmL/XL17 - 24 in43 - 61 cmM/L35 - 40 in89 - 102 cmL/XL17 - 24 in43 - 61 cmL/XL39+ in100+ cm
Men's/Unisex Limited Sizing
S/ML/XL
TorsoWaistTorsoWaist
S/M15 - 20 in38 - 51 cmOne Size (OS)30 - 40 in76 - 102 cmS/M17 - 24 in43 - 61 cmOne Size (OS)30 - 40 in76 - 102 cm
Men's/Unisex One Size Sizing
OS
TorsoWaist
S/M15 - 20 in38 - 51 cmOne Size (OS)30 - 40 in76 - 102 cm
Women's Framed Sizing
XSSMXL
TorsoWaistTorsoWaistTorsoWaistTorsoWaist
XS/S13 - 18 in33 - 46 cmXS/S26 - 32 in66 - 81 cmXS/S13 - 18 in33 - 46 cmS/M31 - 36 in79 - 92 cmM/L16 - 22 in41 - 56 cmM/L35 - 40 in89 - 102 cmM/L16 - 22 in41 - 56 cmL/XL39+ in100+ cm
Women's Limited Sizing
X/SM/L
TorsoWaistTorsoWaist
XS/S13 - 18 in33 - 46 cmOne Size (OS)30 - 40 in76 - 102 cmM/L16 - 22 in41 - 56 cmOne Size (OS)30 - 40 in76 - 102 cm
Women's One Size Fits Most Sizing
OS
TorsoWaist
M/L16 - 22 in41 - 56 cmOne Size (OS)30 - 40 in76 - 102 cm

In Between Sizes?

If you are between sizes on the waist belt, we recommend you size down. If you are between sizes on the yoke or if your measurements fall outside standard sizing, please contact Customer Service at 1.833.548.1999. Purchasing packs outside of standard sizing is possible through our Custom Sizing Program. There is typically an additional cost associated with this purchase.

PLEASE NOTE: The sizing depicted here is specific to the items listed below and does not reflect optimal sizing options for new product moving forward. For more information, see here.

AFFECTED PRODUCTS:

3 Day Assault BVS
3 Day Assault CL
6500
ASAP
Blackjack 100
Blackjack 50
Blackjack 80
Bomb Pack USA
Bop
Cabinet
Crewcab
Guide Light Frame
Hot NICE RATS

Hot RATS
Hot Speed
Hotshot
Hotshot TL
Hover Pack 40
Hover Pack 50
Jump Mountain Ruck
Jump Overload
Jump RATS
Komodo Dragon
Load Sling
Marshall
Metcalf

Mountain Ruck
Mule
NICE RATS
Overload
Patrol 35
Patrol 45
Pintler
Pop Up 18
Pop Up 28
RATS Pack
Rip Ruck
ROUS
Saddle Peak

Scapegoat 35
Scree
Shift
Shift Plus 900
Terraframe 3-Zip 50
Terraframe 80
Terraplane USA
Women's Hover Pack 40
Women's Hover Pack 50
Women's Metcalf
Women's Patrol 35
Women's Pintler
Women's Saddle Peak
Women's Stein 62

MYSTERY RANCH Legacy Sizing

1
Height
Our packs are adjustable and height can be used as a general guide for sizing. For greater accuracy, please use torso and waist measurements.
2
Torso
Use a tailors tape measure or string and have a friend measure between the bony bump at the base of your neck (C7 vertebra) to the spot on your spine that is just above the top of your hip bones.
3
Waist
Measure around your waist just above the top of your hip bones.
Men's/Unisex Framed Sizing
 XSSS/MMM/LLXLXXL
HEIGHT
< 5'6"
< 168 cm
< 5'6"
< 168 cm
< 5'6"
< 168 cm
5'6"-6'2"
168-188 cm
5'6"-6'2"
168-188 cm
5'6"-6'2"
168-188 cm
> 6'3"
> 188 cm
> 6'3"
> 188 cm
TORSO
16-18 in
41-46 cm
16-18 in
41-46 cm
16-18 in
41-46 cm
18-21 in
46-53 cm
18-21 in
46-53 cm
18-21 in
46-53 cm
21-24 in
53-61 cm
21-24 in
53-61 cm
WAIST
25-29 in
64-74 cm
29-34 in
74-86 cm
29-34 in
74-86 cm
29-34 in
74-86 cm
34-39 in
86-99 cm
34-39 in
86-99 cm
34-39 in
86-99 cm
> 40 in
>102 cm
Men's/Unisex Fixed Harnessing Sizing
 XSSS/MMM/LLXLXXL
HEIGHT
< 5'6"
< 168 cm
< 5'6"
< 168 cm
< 5'6"
< 168 cm
5'6"-6'2"
168-188 cm
5'6"-6'2"
168-188 cm
> 6'3"
> 188 cm
> 6'3"
> 188 cm
TORSO
16-18 in
41-46 cm
16-18 in
41-46 cm
16-18 in
41-46 cm
18-21 in
46-53 cm
18-21 in
46-53 cm
18-21 in
46-53 cm
21-24 in
53-61 cm
21-24 in
53-61 cm
WAIST
25-29 in
64-74 cm
29-34 in
74-86 cm
29-34 in
74-86 cm
29-34 in
74-86 cm
34-39 in
86-99 cm
34-39 in
86-99 cm
34-39 in
86-99 cm
> 40 in
>102 cm
Women's Framed Sizing
 XSSS/MMLXL
HEIGHT
4'8"-5'1"
145-155 cm
5'2"-5'9"
155-175 cm
5'2"-5'9"
155-175 cm
5'2"-5'9"
155-175 cm
> 5'10"+
> 175 cm
--
TORSO
14-16 in
36-41 cm
16-18 in
41-46 cm
16-18 in
41-46 cm
16-18 in
41-46 cm
18-21 in
46-53 cm
18-21 in
46-53 cm
WAIST
25-29 in
64-74 cm
25-29 in
64-74 cm
29-34 in
74-86 cm
29-34 in
74-86 cm
29-34 in
74-86 cm
34-39 in
86-99 cm
Women's Fixed Harnessing Sizing
 XSSS/MMLXL
HEIGHT
4'8"-5'1"
145-155 cm
5'2"-5'9"
155-175 cm
5'2"-5'9"
155-175 cm
> 5'10"+
> 175 cm
----
TORSO
14-16 in
36-41 cm
16-18 in
41-46 cm
16-18 in
41-46 cm
16-18 in
41-46 cm
18-21 in
46-53 cm
18-21 in
46-53 cm
WAIST
25-29 in
64-74 cm
25-29 in
64-74 cm
29-34 in
74-86 cm
29-34 in
74-86 cm
29-34 in
74-86 cm
34-39 in
86-99 cm