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Women's X Ultra Pioneer Aero

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Color: Oil Green/Castor Gray/Amparo Blue

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Women's Hiking Shoes

Inspired by the best-selling X ULTRA Family, this hiking shoe is the go-to option for outdoor enthusiasts. The X ULTRA PIONEER AERO is packed with all the technology you need, yet versatile enough to adapt to your daily life.

Cushion: Regular

Outdoor terrain: Mixed trails

Shoe width: Standard

Secure foothold

The reinforced SensiFit™ construction holds your foot comfortably in place, especially on those tough downhills.

Stable & cushioned

Surrounded by foam cushioning for comfort, the Advanced Chassis™ connects directly to the sole to stabilize your heel.

Extra grip

We packed in two different types of rubber and a patterned heel area to grab the ground, giving you more control in the wet and mud. 


Inlay sole Textile

Lining Textile

Outsole Rubber

Upper Leather / Textile

Drop 11 in mm

Heel stack height 19 mm

Forefoot stack height 8 mm

Weight 380 g

Lacing system Regular laces

Waterproofness None 

Size Guide

  • Advanced Chassis™

    Advanced Chassis™ is a molded insert embedded in the outsole. Providing strong lateral support and reassuring protection, it also delivers optimal mobility and flexibility.


    SensiFit™ cradles the foot from the midsole to the lacing system, providing a secure, snug, and virtually customized fit all around the foot.

    Regular laces

    Traditional lacing system with eyelets.

    Chevron lugs

    Lug design with deep penetration and multi-directional grip, improving traction on soft surfaces like mud or loose dirt.

    Mud Contagrip®

    Built for maximum grip on loose, soft, rugged, and uneven surfaces, Mud Contagrip® uses deep, sharp lugs made from a compound that focuses on adhesion.


    A high performance EVA foam that provides shock attenuation.

    Anti-debris Mesh

    Tight mesh that prevents debris from being trapped between your foot and the footbed.

    Synthetic upper

    Synthetic upper material provide great durability and protection for outdoor activities.

    Textile lining

    A soft, breathable lining for extreme comfort.

    Molded OrthoLite® sockliner

    Molded to match the contours of your foot, this OrthoLite® insole provides superior cushioning, breathability and durability, to upgrade the comfort and performance of your shoe.