KS packs

KS packs are lightweight and durable backpacks from a simple and rational building.

Concept: minimal accessories well placed for maximum efficiency!

KS packs series Fit:

Innovative fabrics, the weight / resistance ratio optimized for safe and sustainable using.

A large main tube simple and convenient to use.

 A large pocket on the front of the bag ( 4x30x40 cm =5L) , made in mesh by default (106 gr m²) or in fabric option +16gr or strong mesh option +20gr (175gr/m²) for high durability, to store shelter, clothing or other items even wet. (strong mesh or fabric finish pocket recommended for N/dyneema or VX 07 packs)
  For fabric front pocket option: fit strong mesh at bottom to drain the water, see picture below.

 A wide padded belt (KS 40/ 50/30) with 8 mm foam covered inner side by 2mm 3D  mesh, very comfortable and a good load report on hip (with 25 mm webbing by default).
The padded part size is the same for every packs, the webbing strap length is adjusted for customer waist size.

Shoulder straps (S shapped) 8 mm foam covered inside by 2mm 3D mesh, light, strong and very comfortable.

2 side pockets compact and easily accessible even the pack worn, (if you want them taller by custom please note it means you must remove the bag to take the bottle) closer to the hips and lower back, ensuring comfort and balance. (drainage holes at the bottom)
A system of lateral shock cords (two 3 mm cord x 1m =10 gr) / by  linelocs , 12 loops in total include on the front pocket to allow shock cord lashing.

New 6 bottom additional loops in option.

Top closure by simple and convenient cord and belt strap, which is fixed between the start of the shoulder straps to the front pocket making load lifters effect  .13 mm webbing Sternum strap  adjustable and removable ( 10 gr) .

Every packs fit 2 meters of 2mm elastic shock cord and 1 cord lock to secure your sit pad on back or secure your pole using loops etc...

2 optionals removable waist pockets  for all models.

Available in:

3 volumes: 30 L, 40 L, 50 L
 (Note: KS 50 is the most versatile for almost same weight, price and highly compressible)


   Nylon/dyneema X 210D  165 gr / m² (black with white line), a little bit heavier than past version for a better durability of abrasion and water resistance (PU layer more impregnated).

Nylon /dyneema  X fabric is 210D nylon woven fabric contains a white Dyneema ripstop 0.25 in (6.35 mm) grid reinforcement at 0 and90 is degrees.There Also has an additional "X" pattern of nylon weave over That Improves abrasion and tear-resistance. By experience the reinforcement dyneema is very difficult to break and gives the fabric high resistance and
durability. The fabric is flexible impregnated PU layer to give Improved abrasion and water resistance.

X-Pac tx 07 light gray fabric Or other X-pac fabric:
Side pockets compact and easily accessible even the pack worn. (if you want them taller by custom please note it means you must remove the bag to take the bottle)
Capacity:  for 1 L bottle/ KS 30, 1,5L / KS 40, 2L for KS 50
Fit side shock cord to maintain taller items, for ex up to 3L water pouch.
(In PIC 1 liter bottle in KS 40 pocket)

Top closure by default: Draw cord/ cord lock (in PIC)
 covered by 13 mm compression strap.

 top finish for front mesh pocket by default
 Finish for fabric front pocket (also cargo) option
 with very strong mesh at the bottom to drain water.
(this option is lighter than full strong mesh option)
! bottom in cordura 500D PU coated for all models of packs  330 D For X-pac tx 07 (full dyneema bottom in option ) !

New: included loops to allow front shock cord lashing

4 torso sizes: 47 cm, 50 cm, 53 cm, 56 cm (44 cm is possible, please notify by email)
Mesure your back (torso size) like this:
or measure your usual backpack to be sure, bottom of the pack up to start of shoulder strap.
 or by default: for 1m68---> 47 cm, 1m74--> 50 cm, 1m80-->53cm, 1m86-->56 cm (For Asiatic people add 3 cm)
intersect the result of 3 methods to be sure.
Load lifter option is recommended for adjust your backpack torso length. (increases the length effect)
The weight of the backpack is estimated with a a medium belt (for 90 cm usual pants belt) without accessory and without options.
All models allow you to set your sit pad on back using shock cord included
except for 3D mesh back or anatomic belt option, sit pad pocket option, no loops at top and down.

KS 30
Maximum total volume 30 L (23+5+1+1), fabric nylon / dyneema X 210 D, X-Pac TX 07 .
Size aprox: 12 x 29 x 70 cm max (extended collar open)
Estimated Weight (without accessories)290 gr ,260 gr 
Recommend total loads up to 9 kg.
(SUL version of KS 30 here)

KS 30 Custom mix fabric (without belt)

KS 40
Maximum total volume 40 L (32+5+1,5+1,5), fabric nylon /dyneema X 210 D, X-Pac TX 07  .
Size aprox: 15 x 30 x 75 cm max  (extended collar open)
Estimate weight (without accessories): 320 gr  210D, 280 gr X-Pac,
Recommend total loads up to  10 kg
 (SUL version of KS 4 here)

Strong mesh option
20 mm sternum strap option and 13 mm load lifter strap option.

Dyneema fabric front pocket option.

KS 50
Volume total maximum 50 L (41+5+2+2), fabric  nylon/dyneema X 210D, X-Pac TX 07 
Recommend total loads up to 12 kg  .
Size aprox: 17 x 30 x 80 cm max  (extended collar open)
 Estimated weight (without accessories) : 350 gr, 300 gr.
330D cordura fabric front pocket custom order pack in picture below:


Anatomic belt option, side mesh pocket option, fabric option etc...

!! possibility of change in "custom order", add or remove accessory, fabric,  etc..........!!

KS packs sizes and fabric
Torso Sizes
Belt size (choose your usual pants belt size)

Front pocket material and bottom fabric

Ice Axes Loop:
Fit one elastic cord and cord lock by loop.

Elastic cord and cord lock

Ice Axe Loops


Removable pocket 1L: 

Size: 5X18X12 cm with waterproof zip and 1 key holder hook inside (one/pair).

   Weight: 26 gr in nylon/dyneema 210D
       23 gr in X-Pac TX 07        25gr in 200D black nylon fabric


Removable pocket
Localisation (if single pocket)
Hole for hydration pipe (with inside hook) and water pouch pocket  options for 35 cm X 17 cm X 7cm size water pouch.
(This pocket is compatible with internal pad pocket option but not with internal pocket option.)

H2o Options
Hole position
Back in mesh 3D add 60gr approx.
Padded with not removable 8mm foam pad add 85 gr

Back in 3D mesh
Back in 3D mesh padded with not removable 8mm foam.

3D spacer mesh option
Internal pocket
(around 19cmx20cm) made of silnylon ripstop 30 D black, mini velcro, add 6 gr

Internal pocket
Large belt option 38 mm with dual Adjust Side Release Buckle (in place of 25 mm standard) add 20 gr :

Large belt 38 mm
20 mm removable  (height adjustable) air sternum strap with whistle add 20 gr:
(Included 13 mm webbing removable sternum strap by default)

20 mm sternum strap
Dry bag top closure system:
Velcro and 13 mm buckle:
(Add around 15 up to 25 gr according to the size of your pack and fabric.)

Top strap included

Dry bag top closure system
Sit Pad pockets pair:
(add around 15gr acc to fabric)
! you have to cut your sit pad in a trapezoidal shape, around 28x50x 23 cm according to your length back pack size !

Made with your pack fabric.
Possibility to use spacer 3D mesh (add 21 gr)
 (shaped sit pad are sold below)

Sit Pad pockets
Sit pad shaped according to your back size in white polyethylene foam 8 mm.
weight around 22 gr 
Price 1000 JPY
Zipped front pocket option:

Zipped front pocket option:
Internal pad pocket:
Using with removable pad, make the back of the pack more comfortable and more rigid.
trapezoidal shaped for KS Packs series.
Weight pocket around 15 gr
 Pad in option, shaped according to your back size in white polyethylene foam 8 mm.
weight 22 gr

Internal pad pocket
Load lifter strap :

For frame less pack the load lifter system work well only when the pack is full.
Load lifter option is recommended also for adjust your backpack torso length. (Increases the length effect)
Should be made from lineloc and rigid cord for UL pack add 5 gr.
13 mm webbing add 9 gr or 20 mm add 19gr.
20 mm webbing
Linelock + cord 
13 mm webbing

Load lifter strap material
Anatomic padded hip belt with load lifter strap :
 For better weight transfer on the hips, mostly for slim people (waist 70 cm up to 84 cm) included 38mm webbing and buckle, add around 50 gr.
!! Not compatible with the Sit Pad pockets option but compatible with the Internal pad pocket option !! Fabric : Black 500D cordura or 330D (with TX 07) by default.
Also compatible with the  frame set option.
Price: 2200 JPY

Waist size (choose the same than for your pants)
Mesh pocket pair on side of the pack:
 add around 30 gr in strong mesh (in picture), 20 gr in standard mesh.

Mesh pocket pair

Original "Joker hat" shaped top closure system = Dry bag top closure system associate with 20 mm or 13 mm load lifter strap.
(Also good to associate with 20 mm sternum strap/ whistle)

If you choose 20 mm size there is possibility
to close the pack like a dry bag
 using the same buckle.

"Joker hat" top closure
Frame set

                     Total load in video, 15 kg = maximum confort limit.

A good UL alternative if you don't use your rolled pad to create a frame in your backpack  and to optimize transfer load on hip .
 Removable frame tube (aluminium) weight according to your torso size around 50 gr + 10 gr for  placed fixation.
 This option is compatible with backpack: KS packs, Alpisack, R-50, and all options even anatomic padded hip belt option.
Recommend to use with your sit pad in back, extern or intern, to keep the back of the structure. 
Price: 3800 JPY
Cargo front pocket
Twice bigger than standard = 10 L.
(Available also for Alpisack, bungee cord in option in this case ):

By default fit very strong mesh at the bottom to drain water
(top border in dyneema not included, add 500 jpy).

Fabric/ pack model
Custom front pocket form with fabric tape at top and separate top closure with triangle reinforcement patch (Top strap is not fixed directly on pocket like standard fitting but dissociate):

Available also for strong mesh pocket.
Price: 1000 JPY

Top tape fabric
Bottom loops options:
Option 1 = 4 loops at bottom
Option 2 = 4 gear loops at front of bottom add 2 gr
Option 3 = option 1 + option 2 = 6 loops in total (2 jointly)  add 3 gr 

4 loops at bottom
4 gear loops at front of bottom (Elastic not included)

Loops options
Strap size option:
20 mm width in place of standard 13 mm for shoulder strap webbing and top closure webbing
20 mm top closure strap webbing option add  7gr

20 mm shoulder strap webbing option add 12 gr


Full length shoulder strap daisy chain and removable or fix hand loop :
(hand loop options fit full length daisy chain by default)
Full length daisy chain help to maintain the repartition of tension to keep form of shoulder strap and also for durability, mainly if you carry more than recommended.
Hand loops are made to insert your the thumb on the loop to pull and relieve shoulder part. 
Available in 13 mm  or 20 mm webbing (20 mm recommended if you have taken the 20 mm sternum strap option or for more comfort).
Add around 12 gr/pair or 25 gr/pair (Removable, mean you can put off the loop when no needed) Removable are a little bit heavier.
Removable hand loop.

Hand loop and full daisy chain pair
Only full length daisy chain 20 mm
 (+Load lifter strap option and standard 13 mm sternum strap

20 mm strap
Y shaped top closure strap:
Add around 20 gr (for 20 mm strap) 10 gr for 13 mm strap
(Associate with the front pocket custom form option is recommended to dissociate pocket and strap)
20 mm strap