KS ultralight gear: Fabric options / Material explanations

How to choose your fabric ?

More than manufacturers specifications,

all fabrics are tested by myself, tear and abrasion resistance, I selected the best ratio weight/Durability for fabric I propose bellow (gsm weights are real and measured by me)

Best ratio weight/performance for UL packs:

Ecopak UltraGrid 200 (150 gsm) :

Black 210d recycled nylon yarn from pre-consumer industrial waste. A double 200D Ultra™ white grid provides exceptional tear-strength and visual impact, finished with a waterproof 1500mm PU backing. (Available for all part of the pack)

UltraGrid 200 Black (+white grid)
option for front pocket, side pockets and bottom,
VX07 Body

New ! Nylon 200D Spectra X ripstop finished with a waterproof 1500mm PU backing. More than twenty years of use on trail for this fabric with unbeatable tear, abrasive resistance and durability for his weight ! (For this reason, available for all part of the pack)

Blue sky RED pepper Olive Green and SilverGrey (145 gsm)

NEW ! Full White With a more spaced ripstopand thinner coating for only125 gsm ! -20 gr/Pack

RED pepper

Blue Sky RED pepper
Olive Green and Silver Grey

Olive Green

Silver Grey

Blue Sky

200D Spectra Ripstop X FULL WHITE
NEW !With a more spaced ripstop (7 mm VS 5 mm)
and thinner coating for only 125 gsm !
Instagram example

100% Polyester recycled ECOPAK fabric!

EPX200 COYOTE BROWN

(198 gsm) 200D polyester components 45° Blue CrossPly, 70d ripstop backing DWR (Only for body of the pack and accessories)

(Other EPX200 colors are still in stock, just ask if you want to use it= Blue RED and grey)

+40 gr/Pack

Coyote Brown Ecopak EPX200 fabric
+ 200D shoulder strap option

VX07 SOFT (Light version 145 gsm) Black :70 Nylon Ripstop face fabric treated with a DWR finish. Waterproof PU and polyester layer, 840D Polyester X Ply, 50 D Polyester Taffeta backing fabric. (Only for body of the pack and accessories)

VX 21 BLACK firm 219 gsm, a little bit heavier than other but very good strength, abrasive resistant and DWR. 60% Nylon 40% Polyester 210D Nylon face 0.25 mil polyester film Black Polyester X-PLY® at 22°50 denier polyester taffeta backing + 50 g/Pack (Almost the same design as the previous picture)

For abrasive exposed part:

Default Black Cordura 330D, 500D or 1000D (PU coated)"heavy" but twice abrasive resistant than classic nylon, good for bottom, pockets or climbing packs etc.... about 185/240/350 gsm.Water repellent.

VX21 Firm also in option.

NEW UltraStretch mesh ONLY for front pocket option and bottom pocket option, With Incredible tear and abrasive resistance! weight 192 gsm:

Miscellaneous:

Duty 420D nylon mesh, used by default on front pocket, 158 gsm2, very, very durable and lightweight, UV resistant, low stretch. (Made in Japan) :

Duty 420 nylon mesh

For shoulder strap, padded belt and back option :PE 3D mesh, 2 mm thickness, 178 gsm ! (Made in Japan)

Disclaimer: Although the fabrics are waterproof, we can not consider the pack waterproof because the seams are not sealed , some water could enter by seams. I suggest just using a pack liner or dry-bag for your essentials like the majority of hikers.

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KS packs come with this abrasive resistant finish:

For bottom and side pockets, shoulder and padded belt, 330D cordura black fabric is used by default. Possible change bellow to save weight:

Default cordura bottom and side pocket

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Colored 200D Nylon Spectra or UltraGrid 200 options:

Black(+ white grid) or colors for shoulder strap, waist belt, bottom, back and side pockets instead of default cordura fabric (To save weight and/or for his unique ripstop design), fabric weight 145gsm

Because White and Silver Grey are a translucent fabrics, we can see internal foam on shoulder strap or padded belt, better to not use for those parts.

Total all options weight gain from default cordura 330D around up to -15 gr