Yamatomichi ONE Backpack
Ultralight Pack with a Purpose
The Yamatomichi ONE is a framed ultralight backpack designed for serious hikers tackling rugged terrain. Built with a unique carbon frame and a carefully balanced combination of lightweight and durable materials, it’s engineered to handle steep climbs, rough trails, and long-distance treks while maintaining comfort and stability.
Purpose-Built Design
The ONE was created for the demanding landscapes of Japan’s mountains, where trails are often steep, exposed, and unpredictable. Unlike many ultralight packs, which sacrifice support for weight savings, the ONE uses an X-shaped carbon frame that provides flexibility and strength. This design allows the pack to move naturally with the hiker, maintaining balance on uneven or technical ground.
The frame helps distribute weight efficiently and can handle loads up to 11 kg (24 lbs) comfortably. Hikers can shift the pack’s weight higher for more agility or lower for better long-distance stability.
Lightweight, Durable Materials
Yamatomichi collaborated with Pertex® to develop two proprietary fabrics for the pack body:
70D Pertex® for lightweight, low-stress areas
210D Pertex® for high-wear sections where added toughness is needed
Other key materials include:
Technoforce® Steel fabric with UHMWPE fibers on pockets and the front panel for exceptional abrasion resistance.
ECOPAK EPX200 on the bottom panel for water resistance and environmental sustainability, as it’s made from recycled materials.
These fabrics strike a balance between minimal weight and long-term durability, even in wet, rocky, or abrasive environments.
Custom Fit and Comfort
Proper fit is critical for any hiking pack. The ONE comes in five torso lengths (45–57 cm) and four hip belt sizes, allowing users to choose a highly personalized setup.
Key comfort features include:
Updated hip belt (2025 version) with L-shaped stitching and dual tightening points for a more secure, ergonomic wrap around the hips.
Adjustable shoulder straps and sternum strap with an integrated safety whistle.
Side compression straps to stabilize loads during scrambles or fast movement.
Capacity and Weight
The ONE is ideal for lightweight backpacking and multi-day hikes, with a volume of 50–55 liters.
Pack weight (body only): ~570–612 g (varies by material and size)
Hip belt weight: 116–137 g depending on size
This balance of volume and weight gives hikers room for essential gear while keeping the overall load as low as possible.
Features for Practical Use
The ONE is designed with streamlined yet functional features:
Side pockets for water bottles or quick-access gear
Front bungee cord system for extra layers or wet gear
Gear loops for trekking poles, ice axes, or other equipment
Roll-top closure for adjustable packing volume
Durable bottom panel for protection when setting the pack on rough surfaces
While highly water-resistant, the ONE is not fully waterproof, so Yamatomichi recommends using a pack liner or rain cover in heavy weather.
Durability and Warranty
The carbon frame is strong but lightweight. Yamatomichi offers a one-year warranty on the frame rods, covering any defects or unexpected damage. With proper care, the pack is designed to withstand years of regular backcountry use.
Who It’s For
The Yamatomichi ONE is best suited for hikers and backpackers who prioritize:
Lightweight gear without sacrificing strength or support
Challenging terrain, such as steep mountain ridges or technical scrambles
A customizable, performance-driven fit for long days on the trail
