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Materials - PrimaLoft ECO and TNF APEX Fabrics

PrimaLoft ECO

PrimaLoft® ECO


Earth Friendly Performance and Comfort

PrimaLoft® ECO Core Tech Diagram
  • Thermally Efficient
  • Water Resistant
  • Quick Drying
  • Soft & Lightweight
  • Minimum of 70% recycled content

  • The PrimaLoft® brand is the leader in fiber research and development for high performance insulations. PrimaLoft® Insulation, originally developed for the U.S. Army as a water resistant alternative to down, is globally recognized as the world's best synthetic insulation. PrimaLoft® Insulation products are used in leading outdoor and fashion brands, home furnishings, workwear and military applications where performance and comfort are paramount. PrimaLoft® ECO uses fibers made with 70% post consumer recycled materials to create a high loft, thermally efficient, earth-friendly insulation. Approximately 28 recycled bottles are used in the making of each kilogram of PrimaLoft® ECO, which equates to 4 bottles per meter (of PrimaLoft ECO 100g) or approximately 6 bottles per garment (assuming standard usage of 1.5m/garment).

    CLO Rating
    Dry .68 clo/oz/yd2 Wet .60 clo/oz/yd2


    TNF™ APEX Fabircs



    A soft shell technology breakthrough. Apex is a signature material, researched and developed exclusively by The North Face. Apex makes the fleece/shell combination possible through its proprietary blend of characteristics. Apex offers the dynamic duo of a tightly woven abrasion-phobic face for protection, and a soft-brushed interior for performance and comfort. Apex technology is built to stretch for comfort and mobility and is treated with our Durable Water Resistant (DWR) finish.

    Apex features are nylon constructed and woven for stretch enhancement to achieve the balance between weather resistance and breathability. The average air permeability rating for these fabrics is below 20 CFM.

    Apex is finished with DWR to increase water shed. DWR is laboratory tested for durability and extended wash and wear according to the standard AATCC 22 Water Repellency Spray Test. All Apex™ fabrics meet The North Face standard rating of 90 (70 after a specified number of home washings) for long-term durability.)

    All Apex garments keep you dry in a thick fog or light rain environment. Apex garments are built for warmth. The tightly woven fabric face creates a hard barrier to the elements of cold weather, while the soft-brushed interior allows for a soft warm-next-to-skin feel. The brushed interior also promotes a microclimate, allowing for superior moisture management and continued climate control.

    TNF™ Apex Aerobic
    TNF™ Apex Aerobic fabric denotes the lightest weight and most breathable of Apex garments. It offers the greatest stretch and mobility, with a CFM of 10+, making it ideal for running, cycling, and other highly mobile, aerobic activities.
    Wind Resistance: 10+ CFM
    Weight Range: 4 - 7 oz.
    Usage: High levels of extended aerobic activity (running, biking, climbing) in mild winter and spring conditions.

    TNF™ Apex Universal
    TNF™ Apex Universal is the most versatile of the Apex fabrics. With enhanced stretch and a CFM between 5 and 15, it is both breathable and water resistant, making it ideal for a wide range of activities and weather conditions.
    Wind Resistance: 5 - 15 CFM
    Weight Range: 8 - 11 oz.
    Usage: Medium levels of aerobic activity (hiking, biking, climbing, skiing, snowboarding) in moderate winter conditions.

    TNF™ Apex ClimateBlock Fabric
    Apex ClimateBlock is the most protective Apex fabric. Virtually waterproof and windproof, the fabric also maintains a comfortable level of breathability. Apex ClimateBlock is ideal for trekking, skiing, and snowshoeing in challenging, inclement weather conditions.
    Wind Resistance: 0 CFM
    Weight Range: 11 - 14 oz.
    Usage: Mild levles of aerobic activity (hiking, skiing, snowboarding) or for use in more severe winter conditions.