Item added to basket
Ultralight
AKU ULTRALIGHT is a light hiking family built for simple routes with light loads, where comfort, breathability and steady traction matter more than maximum stiffness. Across the family, ULTRALIGHT combines AIR8000® uppers with a Vibram® Erica Everest outsole for everyday grip on mixed paths, forest tracks and uneven ground. Waterproof options are specified with Gore-Tex® linings for wet UK conditions, and an insulated lining is specified on selected models for colder use. Underfoot, ULTRALIGHT uses a flexible platform with a 4–2mm Texon + TPU lasting board, keeping the walk feel natural for long, steady days.
Jump to ULTRALIGHT details
AKU ULTRALIGHT: what it is (and why it exists)
- Family intent: Hiking footwear for simple routes with light loads, prioritising comfort, breathability and a flexible walking feel.
- Where it sits: An easy-terrain hiking family for everyday outdoor use, rather than technical mountain objectives.
- Weather options: Waterproof Gore-Tex® variants are specified, alongside an Unlined option within the family.
The ULTRALIGHT build pillars
- 1) AIR8000® upper construction: Specified across ULTRALIGHT uppers for breathable comfort.
- 2) Vibram® Erica Everest outsole: Specified for traction and stability on mixed ground.
- 3) Gore-Tex® options: Waterproof Gore-Tex® linings are specified on core variants; Gore-Tex® Insulated is specified on selected models.
- 4) Flexible platform: 4–2mm Texon + TPU lasting board specified with Flexible stiffness for natural walking feel.
- 5) Resoleable: ULTRALIGHT variants are specified as yes for resolable.
Materials and character (family-level)
- Upper direction (model-dependent): Specified as suede + AIR8000® on core models, with a mixed leather/textile upper specified on selected variants.
- Lining options (model-dependent): Gore-Tex®, Gore-Tex® Insulated, or Unlined are specified depending on the model.
- Footbed (as specified): CF footbed specified across ULTRALIGHT variants.
- Fit direction (as specified): Variants specify lasts developed for female foot anatomy.
How ULTRALIGHT answers real buyer concerns
- “Do I need waterproofing for UK conditions?” Choose ULTRALIGHT models specified with Gore-Tex® if you expect regular rain, wet grass and damp paths; choose Unlined where you prioritise airflow.
- “I don’t want a stiff boot for everyday walking.” ULTRALIGHT specifies a Flexible platform with a 4–2mm Texon + TPU lasting board for a natural walk feel.
- “Will grip feel predictable on mixed paths?” ULTRALIGHT specifies a Vibram® Erica Everest outsole for stable traction on everyday mixed terrain.
- “Can I extend the life of the boot?” ULTRALIGHT variants are specified as resoleable.
How to choose within the ULTRALIGHT family (practical guide)
- Choose by lining: Gore-Tex® for waterproof/breathable protection; Gore-Tex® Insulated for colder conditions (where specified); Unlined for maximum breathability (where specified).
- Choose by upper feel: suede + AIR8000® for classic breathability and comfort, or mixed leather/textile where specified.
- Choose by terrain: Best for simple routes with light loads on easy-to-moderate ground; step up to a more supportive trekking family for heavier packs or more technical routes.
- Choose by fit need: Use the women’s-specific build where you want the specified female-anatomy last direction.
Fit & sizing guidance
- Start point: Use your normal EU size as a baseline, then confirm any model-specific fit notes on the product page.
- Sock choice: Decide sizing with your intended sock thickness (thinner for higher-output, milder days; slightly thicker for colder, wetter months).
- Return-reduction tip: Aim for secure heel hold with enough toe room for descents, then fine-tune with lacing before committing to outdoor use.
Care & longevity
- Brush off grit/mud after use, especially around seams and the outsole edge.
- Clean with lukewarm water and a soft brush; avoid aggressive detergents.
- Dry naturally at room temperature; remove insoles to help moisture escape.
- Avoid radiators/direct heat.
FAQ's
- What is AKU ULTRALIGHT designed for? Hiking on simple routes with light loads, prioritising comfort, breathability and a flexible walking feel.
- Is ULTRALIGHT waterproof? Selected models specify Gore-Tex® linings; check the individual product page for the lining specified.
- What outsole does ULTRALIGHT use? ULTRALIGHT specifies the Vibram® Erica Everest outsole.
- What is AIR8000® on ULTRALIGHT? AIR8000® upper construction is specified across ULTRALIGHT models for breathable comfort.
- Is ULTRALIGHT resoleable? ULTRALIGHT variants are specified as yes for resolable.
