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One of the most important decisions you’ll make when choosing a backpacking pack is the fabric it’s made from. The backpack fabric determines the pack’s weight, durability, water resistance, and ultimately, how well it will hold up to the rigors of trail life. Three fabrics dominate the high-end backpacking pack market: Dyneema Composite Fabric (DCF), Robic Nylon, and Cordura Nylon. Each offers a different balance of properties, and understanding their strengths and weaknesses will help you choose the best backpack fabric for your needs.
Dyneema Composite Fabric (DCF): The Lightweight Champion
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Dyneema, also known as Cuben Fiber, is an ultra-high-molecular-weight polyethylene (UHMWPE) fabric. It’s known for its incredibly high strength-to-weight ratio. This makes it a favorite among ultralight backpackers who prioritize minimizing pack weight above all else.
Key Benefits of Dyneema:
- Unmatched Strength-to-Weight Ratio: Dyneema is significantly lighter than traditional nylon fabrics while maintaining exceptional tear strength. A Dyneema pack can shave ounces, sometimes even pounds, off your base weight.
- Waterproof: DCF is inherently waterproof, meaning it doesn’t require a separate waterproof coating. This eliminates the risk of the coating wearing off over time, a common issue with nylon packs.
- UV Resistance: Dyneema is highly resistant to degradation from UV exposure, which can prolong the life of your pack, especially if you hike in sunny environments.
Key Drawbacks of Dyneema:
- Abrasion Resistance: This is the biggest weakness of Dyneema. While strong in terms of tear resistance, it’s more susceptible to abrasion compared to nylon fabrics like Cordura. Scuffing against rocks or tree branches can cause noticeable wear and tear.
- Cost: Dyneema packs are significantly more expensive than packs made from nylon fabrics. The high cost of the material and the more complex manufacturing processes contribute to the higher price tag.
- Packability: DCF doesn’t pack down as easily as nylon. It tends to hold its shape, which can make it challenging to compress into smaller spaces.
- Repair: Rips in Dyneema are difficult to repair and often require specialized tape or patching techniques.
Who Should Choose Dyneema?
Dyneema packs are best suited for experienced backpackers who:
- Prioritize the lowest possible pack weight.
- Are meticulous about gear care and avoid rough terrain.
- Are willing to invest in a higher-priced, specialized pack.
- Typically hike in conditions where abrasion is less of a concern (e.g., well-maintained trails).
Robic Nylon: A Balanced Approach
Robic Nylon is a high-tenacity nylon fabric that offers a good balance of weight, durability, and water resistance. It’s a popular choice for backpackers who want a lightweight pack that can still withstand moderate abuse.
Key Benefits of Robic Nylon:
- Good Strength-to-Weight Ratio: Robic Nylon is lighter than Cordura while offering comparable tear strength for its weight class.
- Abrasion Resistance: Robic Nylon offers better abrasion resistance than Dyneema, making it a more durable choice for hiking in rough terrain.
- Water Resistance: Robic Nylon is typically treated with a durable water repellent (DWR) finish for water resistance. While not fully waterproof like Dyneema, it can handle light rain and moisture.
- Cost: Robic Nylon packs are generally more affordable than Dyneema packs.
Key Drawbacks of Robic Nylon:
- Not Waterproof: Robic Nylon relies on a DWR finish for water resistance, which can wear off over time. Prolonged exposure to rain will eventually saturate the fabric.
- Weight: While lighter than Cordura, Robic Nylon is still heavier than Dyneema.
- UV Degradation: Like all nylon fabrics, Robic Nylon is susceptible to UV degradation, although the rate of degradation can vary depending on the specific type of nylon and any UV inhibitors used in its production.
Who Should Choose Robic Nylon?
Robic Nylon packs are a good choice for backpackers who:
- Want a balance of weight, durability, and affordability.
- Hike in a variety of terrain conditions.
- Don’t mind using a pack cover in heavy rain.
- Are looking for a durable, all-around backpacking pack.
Cordura Nylon: The Durability King
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Cordura Nylon is a heavy-duty nylon fabric known for its exceptional abrasion resistance and durability. It’s often used in packs designed for demanding environments or heavy loads.
Key Benefits of Cordura Nylon:
- Exceptional Abrasion Resistance: Cordura is significantly more abrasion-resistant than both Dyneema and Robic Nylon. It can withstand years of abuse and still look relatively new.
- Durability: Cordura packs are built to last. They can handle heavy loads, rough terrain, and frequent use without showing significant wear and tear.
- Tear Strength: Cordura has excellent tear strength, making it resistant to rips and punctures.
Key Drawbacks of Cordura Nylon:
- Weight: Cordura is the heaviest of the three fabrics. Cordura packs are noticeably heavier than packs made from Dyneema or Robic Nylon.
- Water Resistance: Like Robic Nylon, Cordura relies on a DWR finish for water resistance.
- Packability: Cordura packs tend to be bulkier and less compressible than packs made from lighter fabrics.
Who Should Choose Cordura Nylon?
Cordura packs are best suited for backpackers who:
- Prioritize durability above all else.
- Carry heavy loads or hike in extremely rugged terrain.
- Want a pack that will last for many years of heavy use.
- Are less concerned about minimizing pack weight.
Comparing Backpack Fabric Specifications
While specifications can vary between manufacturers, here’s a general comparison of the typical denier and weight of each fabric:
| Fabric | Typical Denier | Weight (oz/sq yd) |
|---|---|---|
| Dyneema DCF | 50D - 150D | 1.0 - 5.0 |
| Robic Nylon | 210D - 420D | 4.0 - 6.0 |
| Cordura Nylon | 500D - 1000D | 8.0 - 12.0 |
Note: Denier refers to the linear mass density of the yarn used in the fabric. Higher denier generally indicates a heavier and more durable fabric.
Ultimately, the best backpack fabric for you depends on your specific needs and priorities. Consider the type of terrain you typically hike in, the weight of your gear, and your budget when making your decision. Don’t forget to check out our backpacks setup checklist for beginners before your next trip!
