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Fabrics you can depend on.

Premium fabrics; from Organic Cotton to Dyneema

Rockgeist specializes in the largest selection of premium fabrics from Dyneema®, Cordura®, X-Pac®, and ECOPAK™. These fabrics are carefully selected for their unrivaled durability and performance for their weight. Combined with meticulous design and exceptional workmanship, these materials are an essential element in delivering best-in-class gear. Visit our framebag Gallery to view example builds in various fabrics.

*Color swatches are approximate representations only.


Framebag with Cordura Fabric


X-Pac® builds durable, lightweight fabrics in eco-friendly facilities in the USA and Germany. Xpac® is powered by 100% renewable energy and offset all carbon emissions in partnership with Climate Partner and Plastic Free Oceans. 

When available, Rockgeist purchases VX series fabric with Smartrepel® water repellent coatings. Visit our Smartrepel® article to learn why this coating is an important shift in the industry.


X10, X11 Cotton Duck consists of a natural cotton outer face with a black X-Ply® inner sandwiched by a waterproof polyester film backing. X11 styles are made with organic cotton and both styles are PFC-free (no fluorocarbon water repellent coating).

The waterproof backing means there is no need to wax the outer cotton. It has a stiffer body than any of the traditional X-Pac offerings and weighs slightly more.

Why X-Pac sets the bar & which version meets your needs

X-Pac™ laminate is the workhorse fabric technology for bikepacking gear. The laminate make up allows multiple layers, each with different beneficial properties, to be combined into one fabric.

For example, VX21 is constructed of three main layers; a 210 denier nylon face that give abrasion resistance and stitch retention, a black polyester X-Ply™ grid on a PET film that gives low stretch and waterproofing, and a 50 denier taffeta backing that gives wear resistance and protection to the waterproof layer. Collectively these layers create a technical fabric with exceptional abrasion resistance, low stretch, and durable waterproofness. VX07, X33, VX42 and X50 are similarly constructed with their respective nylon weight (70d, 330d, 420d, and 500d).

Choose VX series if...

you want a technical lightweight fabric with exceptional abrasion resistance, low stretch, and durable waterproofness. VX21 series comes in the most color options. Higher weight fabrics such as VX42, X50 have a thicker nylon layer which gives increased durability and abrasion resistance.

¤ Waterproof

¤ Lightweight, durable

¤ Extensive color options

¤ VX42, X50 heavier weight options for an increase in abrasion resistance

Choose LiteSkin (LS) if...

you prioritize lightweight gear. LiteSkin (LS21 & LS42) has strong abrasion resistance at lower weights compared to its VX21 and VX42 equivalent fabric.

¤ Waterproof

¤ Lighter weight compared to VX series

¤ Unique heterogenous aesthetic

Choose Cotton Duck if...

you’re looking for the most natural look and feel to your bikepacking gear while still benefiting from the technical performance of Xpac. Cotton Duck pairs particularly well with bikes built from classic lines and steel tubing.

¤ Waterproof

¤ Fluorocarbon (PFC) free

¤ Organic cotton available

¤ Natural, earthtone colors


Waterproof, durable, laminated fabric with 100% recycled polyester. Every yard of ECOPAK™ uses about 20 plastic bottles and saves one pound of carbon emissions compared to standard fabric.

Ecopak fabrics
Choose ECOPAK if...

you value recycled fabrics and fluorocarbon-free water repellency (PFC-free fabrics). The physical properties of ECOPAK competes with those of Xpac fabrics above while prioritizing environmentally friendly materials.

EcoPX-20 most closely compares to VX21 Xpac while EcoPX-40 and 45RS provide a heavier, thicker fabric for increased durability and abrasion resistance.

Which ECOPAK weight is best?

It depends. We offer ECOPAK in three fabric weights which are given by the number in the color name;  20, 40, and 45RS. These numbers refer to the weight of the outer most layer of fabric with “RS” being short for a “Rip Stop” weave (this is the same nomenclature for X-Pac fabrics).

Heavier weight fabric generally means increased durability at the expense of weight. The exception is Ultra-PE fabrics in our Fiber Flight Series.

20 is short for 200d fabric, thus, 40 means a heavier 400d fabric but EcoPX-40 has 6x more abrasion resistance then EcoPX-20.


ECOPAK vs. X-Pac

Both use a laminate construction for a durable, lightweight fabric. ECOPAK has the benefit of using a 100% recycled polyester face and all fabrics are fluorocarbon-free. While X-Pac has only select fabrics that are fluorocarbon free (cotton duck, Ultra VX40, and Smartrepel fabrics).

X-Pac has the benefit of being Made in USA or Germany from domestic & imported materials, while also offering more variety balancing durability with ultralight options.

For example, X-Pac offers durable USA-made Cordura 500d fabrics laminated to waterproof X-ply membranes (X50 series), LiteSkin fabrics that push the boundaries of ultralight and durable, and offer natural/ organic laminate fabrics in their X10, X11 Cotton Duck series.


ULTRA-PE fabrics

ULTRA-PE fabrics encompass high end fabrics built with with the strongest, lightest fibers in the textile industry. These fabrics make up our Fiber Flight Series; gear built to maximize durability while minimizing weight.

These unrivaled fibers are chemically know as Ultra High Molecular Weight Polyethylene (UHMWPE) and are branded by names such as Dyneema®, Dyneema Composite Fabric (formerly Cuben Fiber), Spectra®, UVX40 (made by Dimension Polyant®), and EPL Ultra (made by ECOPAK™).

Cordura® fabric is constructed of a specialty nylon weave with a waterproof coating and has exceptional resistance to abrasion and punctures. 500 denier Cordura® is typically used for the face of gear, while 1000 denier and ballistic 1050 denier is used for abrasion prone areas (e.g., the spine of bags). Ballistic 1050d is standard on the spine of all Rockgeist framebags.

Cordura Close Up

These images are scanning electron microscopy (SEM) images showing the waterproof coating and the weave of the individual nylon fibers. The coating seen on the bottom of the image illustrates the difference between Cordura’s waterproofing approach versus the laminate layers of Xpac.

X-Pac versus CORDURA

There are small differences between X-Pac and Cordura but together they make rugged, high performance framebags.

X-Pac Benefits
  • A lighter base weight then its Cordura counter-part.
  • Will absorb less water then Cordura. This makes X-Pac an ideal choice for ultralight applications.
  • X-Pac waterproofing is more durable due to a dedicated waterproof layer versus the waterproof coating of Cordura that can wear easily.
  • X-Pac has a stiffer body and holds its shape better then Cordura

These benefits are why Rockgeist uses X-Pac (and similar ECOPAK fabrics) for the panels of our framebags and body material of our sewn universal gear.


Cordura Benefits
  • Generally, Cordura has better abrasion resistance then equivalent X-Pac. One exception is the X50 series X-Pac, which actually use USA-made Cordura 500d on its outer face giving the best of both brands in one fabric.
  • Cordura is a more pliable fabric than X-Pac. This is why Rockgeist uses 1000d Cordura for internal framebag dividers and for the spine of Medic and Cache Top Tube bags.
  • Cordura’s softer hand is less abrasive to the paint of your frame and takes sharp curves exceptionally well with no creasing.
  • The Ballistic Cordura 1050d is a fabric in its own class. It provides a unique advantage of exceptional abrasion resistance, less wear to your frame’s paint, and a pliable body that takes sharp curves well with no creasing. These attributes are why all Rockgeist framebags use this fabric for their spine.


Compare relative Dyneema, Cordura, EcoPak, and Xpac fabric weights using the chart below.

How will your fabrics fade in the sun?

To help answer this question a few of the more popular X-Pac fabric colors were rounded up and exposed to the Sun’s UV energy for 2 summer months. The intent was to rank the fabric colors by how much they fade, not necessarily to show what your fabric will look like after a few seasons. Keep in mind if you ride at high elevation in Colorado your colors will fade much faster then if you ride in the dense rainforest in North Carolina.

Methods: A fabric swatch of each color was sewn together and placed on the workshop roof. Sun exposure lasted from noon to about 7 pm for 2 summer months. After the UV challenge, before and after photos were compared by taking the average RBG values of each swatch to obtain a single RBG color. The luminosity of this single RGB color was then used to calculate a percent fade.

Zipper Testing - Durability makes the Difference

Zipper durability is one of the most important element of your framebag. We understand first-hand the challenges of a busted zipper while on a long journey and this experience drives our commitment to build your framebags with the best zippers on the market.


We have rigorously tested almost a dozen different zipper types which includes not just different zipper manufactures, but also different styles of zipper sliders, teeth, and tape. Those tests resulted in the zippers we use today which include YKK molded zippers for our Mudlust series and custom zippers from Europe for our Fiber Flight series.


Our Mudlust series set the standard for zipper durability while our Fiber Flight zippers match that durability while having the lowest force to open/close (i.e., smoothness, see graph below) and offer the highest level of water-resistance for a non-dry bag style zipper. These Fiber Flight zippers are custom made for Rockgeist which include specific branded colors. If you would like to upgrade your Mudlust framebag to included these Fiber Flight zippers please select your color here.