Mens AION Sneakers
Mens AION Sneakers
This style fits true to size. For a perfect fit we recommend to measure your foot, reference the size chart, or try them on by printing a template where provided.
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Eco Friendly
Natural Materials
Grounding
Earthing
Barefoot
Wide Toe Box
Product details
Product details
AION
Crafted to keep you grounded, AION is the next evolution in barefoot lifestyle sneakers. A low-profile, lightweight build, zero-drop sole, and roomy toe box support effortless, natural movement- while a clean, minimalist design delivers understated style that fits anywhere, anytime. Whether paired with casual fits or layered under high-fashion looks, AION balances laid-back ease with modern edge, making it a versatile and expressive piece in any wardrobe. You’d never guess it’s a barefoot shoe.
Named from the Greek Aion- meaning “eternity” or “lifeforce”- AION reflects a lifestyle rooted in presence, rhythm, and connection to the earth.
Best For
Walking, working out, grounding, a day at the office, the skate park, travel, cool or warm weather, active all-day wear. The perfect fusion of style, grounding, and barefoot functionality.
Features
Barefoot DesignWide Toe Box for natural splay and stability.
Thin & Flexible Cup-sole design for natural movement and ground feel. For foot strength development and enhanced toe grip.
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Grounding TechnologyUsing our proprietary Direct GroundSync™ conductive technology, molded into the outsole.
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Zero Drop & No Toe SpringNo heel elevation or elevated toe box. Heels and toes are flat. For improved foot strength, body posture and gait.
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Low-cut CollarA padded, low-cut collar for a sleek look and added comfort.
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Natural materialsPremium metal free Nappa leather upper, soft metal free leather lining and natural cork insole.
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LightweightLightweight design reduces muscle fatigue, enhances agility, and improves ground feel—supporting efficient movement, proper posture, and natural foot biomechanics.
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Perforations On ToePerforated leather vamp boosts airflow to keep feet cool, while adding a sleek, modern edge to the design for effortless style and breathability.
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Rubber OutsoleFor improved grip and traction
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Cork InsoleAntimicrobial, minimizes odor and disperses sweat. Biobased foam cushioned bottom with natural cork top layer.
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Materials
Upper
- Quarter, Tongue, Overlays, Collar, Vamp, Heel - 100% premium metal-free natural Nappa leather
Lining
- Collar, Heel & Counter - 100% CR/Metal Free leather lining
- Other lining - 100% Bamboo Fiber
- Footbed - 95% Bamboo Fiber, 5% Stainless Steel conductive thread
Insole
- Castor bean oil-based foam
- Naturally antibacterial cork top layer
Outsole
- Recyclable synthetic rubber
- Pads - Proprietary conductive carbonized rubber
Laces
- Made from 100% GRS RPET (recycled plastic bottles)
Weights & Measures
- Sole thickness / stack height - 5 mm / 7 mm
- Weight - 320g (Per shoe in Men's size US 9 / EU 42)
Shipping & returns
Shipping & returns
Under-groundz members get FREE domestic standard shipping and hassle-free returns in the US on every order. Sign up.
SALE shoes purchased during a sales period can be returned for a full refund, minus an $11 fee for a return shipping label. FINAL SALE items are non-refundable.
Visit our Shipping & Returns page for more details.
Sizing & fit
Sizing & fit
Our AION sneakers are generally a medium fit and true to size.
If you are not used to wearing barefoot shoes with minimal cushioning, we recommend taking some time to acclimate. Start with wearing them for an hour a day and progressively increase time as your feet adjust.
Wearing natural cotton socks will still provide grounding!
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Barefoot Shoes Re-Imagined!
AION is the next evolution in barefoot lifestyle sneakers. Designed with a low-profile, lightweight build, zero-drop sole, and spacious toe box, it supports natural, effortless movement. Its clean, minimalist aesthetic delivers understated style that works anywhere, anytime. AION balances laid-back comfort with a modern edge- making it a versatile, expressive staple in any wardrobe. You’d never guess it’s a barefoot shoe.
Inspired by the Greek word Aion- meaning “eternity” or “lifeforce”- this sneaker embodies a lifestyle rooted in presence, rhythm, and connection to the earth.
Rooted In Style, Energized By Earth
AION seamlessly unites style, functionality, and versatility- fusing modern shoe design with the benefits of grounding. Whether you’re on a leisurely stroll, deep in a workout, or at the skate park, AION eliminates excess electrical build-up by maintaining an uninterrupted connection to the Earth’s natural charge.
This connection may support reduced inflammation and pain, faster recovery, balanced biological rhythms, and improved sleep and circulation.
Walk Naturally
AION embodies the essence of barefoot walking, featuring a zero-drop, thin flexible sole, and wide toe box for free movement, natural grip, and optimal ground feel.
THIN AND FLEXIBLE
Thin and flexible cupsole outsoles allow for a natural and unrestricted range of motion, emulating the sensation of walking barefoot. They provide enhanced sensory feedback from the ground and promote better balance and proprioception. Increased flexibility facilitates a more efficient and biomechanically sound gait, reducing the risk of injuries, promoting foot strength, and increasing mobility.
Whether navigating rugged terrain or strolling through urban landscapes, AION offers heightened comfort and performance, enabling wearers to truly connect with their surroundings and move with effortless ease.
