Aku Adapta Light Gtx Review

The Aku Adapta Light GTX are boots designed for summer hikes and trekking on moderately challenging terrain, for those seeking comfort and breathability without sacrificing the protection of a waterproof membrane or the structure of a mid-cut boot. They are suitable for both day hikes and light multi-day treks.

Technical features of Adapta Light Gtx

• Upper: ripstop nylon with AIR 8000 technology and leather
• Waterproof membrane: Gore-Tex More Seasons
• Outsole: Vibram Adapta
• Weight: 530 grams per shoe
• Midsole: direct-injection molded with Elica technology
• Country of manufacture: Italy
• Men’s sizes (UK): 6–13
• List price: €199,90

Test mode

I tested the Aku Adapta Light GTX over the summer on hikes that varied greatly in duration, elevation gain, and terrain. I used them on both day hikes with minimal technical difficulty and multi-day treks involving overnight stays in bivouacs and tents, tackling 700–1,300 m of elevation gain and carrying backpacks weighing between 8 and 13 kg.

The high temperatures allowed me to evaluate their breathability above all, while several thunderstorms—including rain and hail at around 2,000 meters—allowed me to test their waterproofing.

Adapta Light Gtx on-site test

First impressions and construction

The Aku Adapta Light GTX immediately convey agood sense of build quality. Aku pays particular attention to the traceability of its materials, most of which come from Italy or the European Union.

The design is the same as that of the Adapta SD we tested the previous year, with the difference that the Light version has undergone a “weight-reduction regimen.” A less structured upper and a more flexible midsole have reduced the weight by 14% compared to the SD model, resulting in a lighter and more breathable shoe.

The upper combines ripstop nylon with Air 8000 technology, designed to promote breathability, and leather inserts in the areas most prone to wear, such as the toe and side panel. Construction also incorporates a Gore-Tex More Seasons membrane that extends above the ankle.

The dual-density midsole utilizes Elica technology, which offers good cushioning and promotes a natural roll, especially on compact terrain.

Entrance and lacing

The shoe is easy to slip on and has a fairly roomy interior, while the heel remains secure and stable while walking.

The lacing system, however, offers few adjustment options. Personally, I would have preferred an additional locking lace guide between the instep and the collar, which would have allowed for more precise adjustment of those two areas, as is the case with the SD model. Since I have a rather tapered foot, I actually felt my foot slide slightly toward the toe during longer descents, causing some discomfort to my toes.

Feeling during an hike

The Aku Adapta Light GTX are comfortable, especially on easy and moderate trails.

The cushioning and the Elica system promote a natural roll and maintain a good level of comfort even on the longest hikes. Despite the cushioning, there’s still good ground feel, without that sensation of excessive isolation from the ground typical of some very soft constructions. The stable heel further contributes to a secure stride.

Tread’s performance was also very positive, demonstrating good traction on mud, dry rock, and wet rock. The durability was particularly impressive: after about 130 km, the lugs and rubber were still in excellent condition.

However, the lightweight construction shows its limitations on more challenging terrain—such as rocky ground, scree, and very steep slopes—where you really feel the lack of greater stability and protection.

Breathability and Waterproofing

The Gore-Tex waterproof membrane extends over most of the collar and kept my feet dry during river crossings and in prolonged rain and hail. It also dries quickly.

Breathability is undoubtedly one of the strengths of the Aku Adapta Light GTX. Despite the presence of the waterproof membrane, moisture management has proven to be very effective even on the hottest summer days. The upper also tends to absorb little water in the leather sections, while the fabric areas dry quickly, preventing a very wet upper from compromising breathability for an extended period.

In terms of warmth, the boot is best suited for summer use. During testing, it proved comfortable even at temperatures around 5 °C and is therefore suitable for use in the shoulder seasons for those who aren’t particularly sensitive to cold feet.

Protection

The level of protection is moderate and consistent with the boot’s intended use for hiking. The sufficiently rigid toe cap protects against impacts with rocks and roots, while the leather side panel protects the nylon upper in areas most exposed to abrasion and cuts.

The collar uses soft materials and offers support that falls halfway between that of a low-cut shoe and that of heavier, more structured boots.

Fit

This shoe is particularly well-suited for medium-to-wide feet, thanks to the softness of the upper and the generous interior space. It can also accommodate narrower feet for those who prefer a less snug fit, though the heel remains stable.

For those with tapered feet, it may be advisable to choose a half size smaller than your usual size.

Recommended for

The Aku Adapta Light GTX are hiking boots designed for those looking for lightweight, breathable footwear without sacrificing waterproofing and ankle protection. They are ideal for everything from short day hikes to multi-day treks with medium-weight backpacks.

These boots are more than capable of handling hikes lasting many hours and covering many kilometers, provided the terrain remains relatively easy. Due to their light weight and the resulting level of protection they offer, they are not recommended for rough or challenging terrain; for such conditions, the Adapta SD model is more suitable.

Excellent for summer and the increasingly warmer transitional seasons at low elevations.