Blog

X-Pac Backpack Fabric

Posted

X-Pac™ fabric originates from the sailcloth industry, the same industry that developed Cuben and Spinnaker, among others. The need for huge yardages of ultralight, ultrastrong, waterproof fabrics (plus customers with deep pockets - yachts aren’t cheap) means sailing drives innovation.

The outdoor industry benefits from these innovations. Spinnaker, Cuben, and now X-Pac™ are widely used in backpacks, SAR, bike packs, and ultralight gear.

X-Pac™ is lightweight, forever waterproof, UV resistant, and has good tear, puncture, and abrasion resistance. It’s a perfect backpack fabric.

X-Pac™ is a laminate consisting of:

  1. Nylon face fabric
  2. X-Ply polyester yarn insert for bias stability and tear strength
  3. PET (Mylar) film for waterproofing and stretch control.

The nylon face fabric comes in different deniers such as 210, 330, 500, 1000, etc. The higher the number the more durable and heavier the fabric will be.

The X-Ply polyester yarn is laid down in a polygonal pattern to provide bias stability and increase tear strength.

The PET film makes the fabric waterproof forever and prevents stretch, even if the face fabric gets wet.

Put together, these features make X-Pac™ lightweight, durable, waterproof, highly stain resistant, and very strong.

Such a feature set is hard to find, and why we use it in our backpacks.

Which Fabric is Right For Me?

The differences in the X-Pac™ fabrics we use are in the face fabric and the color. X21 uses a 210D face fabric, while X42 uses a 420D face fabric.

420D is thicker, stronger, and more abrasion resistant than 210D.

210D is lighter than 420D, and plenty rugged for normal use through moderate bushwhacking.

In general, if you're a backpacker leaning toward ultralight and hike a lot of established trails, X21 is your fabric.

If slot canyons, rope hauls, rock abrasion, and extreme bushwhacking are in your future, choose X42.

View Comments


Backpack Updates June 2017

We aim to build the best backpacks in the world.  A result of this goal are periodic updates to our backpack lineup.  We're really excited about these changes and introductions.  They reduce weight, add function, and some of the new products being developed are truly compelling. Improvements:  Hardware: Our compression hardware is changing from Side Release buckles [...]

Read More »

2017 Backcountry Hunters & Anglers Larry Fischer Award

It’s easy to be good at something you love. Passion drives action and persistence. Our passion is the outdoors.Nature itself and the active enjoyment of it calms troubled spirits and nurtures the soul. Few things in life give back more to you than that which you put in. The great outdoors [...]

Read More »

Which Frame Height is Right for Me?

The frame height you need depends on torso length and expected loads. Torso LengthUp to 30 lbs30-50 lbsOver 50 lbs15-16”24"24"24 or 26"17-19”24 or 26"26"26 or 28"20”+26"26 or 28"28"The chart above ballparks the frame height needed in most situations.  For more detail and fine tuning, read on. Frame height is critical to comfort.A comfortable backpack is one that [...]

Read More »

Why We Care About Conservation

"If future generations are to remember us with gratitude rather than contempt, we must leave them something more than the miracles of technology. We must leave them a glimpse of the world as it was in the beginning, not just after we got through with it." - Lyndon B. Johnson My father tells me stories [...]

Read More »

Product Focus: Seek Outside Divide

What makes the Divide the best ultralight backpack on the market? Comfort - our suspension rocks! Our Patented Articulating Frame paired with an articulating hipbelt that grips your body make our packs the most comfortable backpacks on the market. Versatility - one pack covers almost all the activities you can imagine. If it doesn’t, you can [...]

Read More »

Product Focus: Redcliff

The Redcliff is a Seek Outside original.  Part tipi, part pyramid, and all versatility the Redcliff is big enough for families and car camping while being light enough for large groups to carry backpacking.  A symmetrical shape and subtle angles on all panels make it capable of shedding strong wind, rain and snow, while pitching [...]

Read More »

Our four smallest shelters compared

Here at Seek Outside one of our most frequent customer questions is "which of the four smaller shelters should I get if I'm going to use it for backpacking?"  It's a tough thing to answer, especially if you have no way of seeing at least one of the options in person, and most especially if [...]

Read More »

Michael Fried on using the Unaweep motorcycling through South America

It's always a privilege to see the new uses customers find for our gear, things we never considered when we designed and built it.  Michael Fried's ambitious motorcycle and hiking trip through South America certainly qualifies.  Read, look, and then start planning.  -S.O. It's hard to pick a pack to live out of for a year, [...]

Read More »

Winter canyon backpacking video, logistics, and gear thoughts

Last week I wrote about a gear testing trip into the Escalante.  Today I'm back with the video report, as well as some thoughts about gear selection and trip planning for a backpacking in the Colorado Plateau during the heart of winter.Logistics:Statistics will tell you that January is one of the wetter months of the [...]

Read More »

×
×