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The flagship trail running shoe line from "Merrell Test Lab.", which brings together the brand's technologies. It features an ultra-lightweight, highly abrasion-resistant, state-of-the-art upper.UltraSocial distancing recommendedModel.

The upper is made of "MATRYX®," which boasts excellent abrasion resistance, allowing for a more aggressive, attacking run with overwhelming lightness, breathability, and durability, without worrying about the upper tearing even in rugged field conditions. The midsole uses "FLOATPRO+™," a supercritical foam that further updates cushioning and functional durability. Contrary to its appearance, it is not too soft, and is particularly excellent in terms of light ground contact and stability during landing and push-off. The outsole is equipped with a "Vibram MEGAGRIP × Vibram TRACTION LUG" outsole (4mm lug depth) that provides the highest level of grip on wet surfaces and rugged trails. This is a top-of-the-line model for long distances that combines three high-performance technologies.

Merrell Test Lab.'s mission is to enable athletes worldwide to perform at their best in mountain sports and outdoor activities through product development, continuously driving innovation and evolution in MERRELL's performance technology. The product development process thoroughly incorporates feedback from MERRELL's globally contracted elite athletes, embodying the functions and comfort that athletes actually need. "MTL" in the product name is an abbreviation for "Merrell Test Lab." and is a symbol of the flagship line that brings together the brand's technologies.

[Functions and Materials]

■ MATRYX® x TPU reinforced upper
The upper features a tough multifilament made of Kevlar fiber and high-strength polyamide. It boasts excellent abrasion resistance (durability) and is lightweight despite being ultra-thin.The stretching is also suppressed, ensuring stability.
*By using Matryx® as the base, we were able to revise the upper pattern and successfully reduce the number of overlay parts. This resulted in a lighter and more breathable structural design.
■ Recycled shoelaces
Shoelaces made from 100% recycled materials.
■ Shoelace stretch keeper
A stretchy rubber shoelace keeper for storing shoelaces after they've been tied.
■ Padded opening
The shoe features a padded, cushioned collar. This reduces pressure on the heel area and ensures a comfortable fit, even during prolonged wear.
■ Reflector (retroreflective) detail
Retroreflective material is used in the logo design and other strategically placed areas to enhance visibility even in dark places.
■ TPU overlay (3D printing)
TPU overlays are placed in areas prone to wear to improve durability.
■ Recycled mesh lining
Highly breathable mesh lining made from 100% recycled materials.
■ Recycled Mesh Footbed Cover × Cleansport NXT™ Odor Control Treatment
A highly breathable mesh footbed cover made from 100% recycled materials and treated with Cleansport NXT™ odor control.
■ Recycled PU footbed
A polyurethane foam footbed made with 5% recycled materials.
■ FLEXCONNECT™
The design incorporates assist lines both vertically and horizontally to smooth foot flexion in all directions, making it easier to grip the ground.
■ FLOATPRO+™ Foam Midsole
Based on "FLOATPRO™," a sustainable EVA foam that excels in cushioning and rebound elasticity while balancing the seemingly contradictory qualities of lightweight and durable (functional sustainability), the midsole incorporates "supercritical foam," which has been updated with nitrogen injection to enhance lightness, durability, and propulsion (cushioning).It excels in ground contact upon landing, light cushioning, and stability.To reduce the environmental impact, the product is manufactured using a "waste-free process" and uses TPE (thermoplastic elastomer) material, which is easily recyclable, as the raw material.
■ Vibram MEGAGRIP outsole
Vibram, a world-renowned Italian sole manufacturer, offers one of the highest-performance compound grips. It delivers exceptional grip on wet surfaces and rugged, uneven terrain. Attention has also been paid to the lug pattern and lug depth (4mm), which significantly impacts grip performance on the field.The rubber is stretched from the toe to the heel, absorbing impact upon landing and providing stability.
■ Vibram TRACTION LUG (Vibram Traction Lug) Lug Shape
Vibram's latest patented lug design, featuring fine protrusions, provides superior grip. The increased surface area enhances stability and improves traction performance.