20L Large-Capacity Hiking Backpack

*The materials used vary depending on the color.

Gray fabric:

The main material, Challenge Sailcloth's ULTRA 80, is an ultra-light, high-density, high-performance fabric developed for outdoor gear that demands extreme lightness. It achieves overwhelming lightness while possessing high strength, abrasion resistance, wind resistance, and tear resistance. It is primarily used in high-end shell jackets, ultralight tents, tactical gear, and professional sportswear.

This is the lightest and most durable material ever made using Challenge Sailcloth's ULTRA™. We have adopted ULTRA 80, which combines abrasion resistance superior to nylon with approximately 20% less weight. This fabric, made with UHMWPE (ultra-high molecular weight polyethylene), has excellent water resistance and is 15 times stronger than steel by weight.

Black fabric:

Contains ultra-high molecular weight polyethylene. Dyneema® fiber has a higher tensile strength than other fibers when compared at the same weight, boasting approximately 15 times the strength of steel by weight. In addition to ultra-high strength, abrasion resistance, and lightness, it also excels in cut resistance and tear resistance.

The world's strongest fiber, Dyneema, is an innovative material that overturns conventional notions.

Features of Dyneema
◆ Lightweight: Low specific gravity (0.97), light enough to float on water.
◆ Strong: 15 times stronger than steel at the same weight.
◆ Excellent durability: High abrasion and UV resistance.
◆ Waterproof: Does not absorb water and is resistant to deterioration.

Dyneema is the strongest material, offering "strength x lightness x durability."

Designed to better suit Asian body types and usage habits

The butterfly-shaped comfort shoulder straps and adjustable length straps ensure a secure fit. The back and shoulder straps are made of breathable and lightweight sandwich mesh material, providing comfort even during prolonged wear.

High-functional and intuitive opening/closing system

Equipped with a German-made FIDLOCK® magnetic buckle, allowing for quick and smooth opening and closing even when wearing gloves. This achieves stress-free operability.

Flexible storage and expandability

The top section has an expandable capacity, adaptable to various uses. It offers detailed storage solutions for each item, including a large-capacity kangaroo pocket, a zippered valuables pocket, an internal pocket with an elastic band, and side drawstring pockets.

 Enhanced night safety and accessory expandability

The reflective band and rope hook at the bottom of the backpack improve visibility at night. The thick webbing loops on the front strap and the cord hook at the bottom allow for easy attachment and storage of equipment such as bottles, lights, and trekking poles.

3D ventilation structure: Floating grid fabric improves breathability                                                     

Breathability: Promotes airflow, reduces back sweat, and maintains comfort.
Comfort: Reduces pressure on the back and provides better support and fit.
Heat dissipation: Quickly dissipates heat and prevents overheating.

All-weather対応: Although made with "water-repellent fabric" and capable of handling everyday water exposure such as rain and splashes to some extent, it is not completely waterproof and cannot withstand submersion or prolonged exposure to water.

Increased storage space: With a hood mesh pocket on the front, storage space can be expanded.