TRAIL Liner Shorts ST T3

Assos TRAIL Liner Shorts ST T3

This super-lightweight MTB liner short from the Assos TACTICA line is designed for less intense riding like touring, bike parks, e-MTB, and commuting. At its core is the new OFF‑ROAD ST T3 Insert with 6 mm of padding thickness — 33% thinner than the high-performance equivalent found in the HP models, yet thanks to its two-layer construction it still dampens vibrations and distributes impacts effectively. The ultra-breathable Airflow.1299 knit fabric delivers maximum breathability, making these liner shorts ideal in warm conditions above +21 °C. The fit hugs like a second skin, layers smoothly under shorts or pants with minimal friction, and is built around a comfort-focused, secure comfort‑Fit design.

• OFF‑ROAD ST T3 Insert: 6 mm, two-layer, thermoformed to reduce edges and irritation
• Airflow.1299: ultra-lightweight, highly breathable warp-knit fabric
• zeroPressure Waist: soft, highly elastic waistband with no pressure points
• Superlight Leg Grippers: light, secure hold without digging in
• 3D Waffle: patented, three-layer perforated foam for increased air circulation
• goldenGate 2.0: flexibly mounted panel that moves naturally with your hips and pedal stroke
• Reversed Seams and standard-length legs for low-friction layering
• Recommended use: touring, bike parks, e-bikes, commuting; breathability 5/5, quick-drying 5/5

Technical Details and Features

The Shock‑Absorb Damping Mono 6 of the ST pad uses compressive foam layers and is tailored to the more upright positions typical of off-road riding; the Thermoformed shaping noticeably reduces material edges. The insert combines 3D Waffle for enhanced ventilation with goldenGate 2.0, where the front and rear edges are anchored while the sides and centre move freely with your body — so the pad follows your movement instead of rubbing against it. The main fabric Airflow.1299 is the lightest TACTICA liner textile, anchoring its airy mesh structure with a stabilising zigzag binding effect. All primary seams are reversed to further reduce skin friction, and the leg length increases overlap with outer shorts for a clean, integrated system.

Riding Scenarios and Benefits

As the base layer of the TACTICA System, these liner shorts work best worn under cargo shorts or lightweight trail pants — for example paired with the TRAIL TACTICA Cargo Shorts T3 or the MILLE GTC ZEPPELIN Cargo Shorts. The focus is on everyday versatility, minimal weight, and maximum breathability, keeping you dry and unrestricted whether you're on singletrack, riding to work, or out on a summer gravel adventure. The zeroPressure Waist distributes hold comfortably across your waist, while the Superlight Leg Grippers keep everything in place without pinching — perfect for long days in the saddle or back-to-back bike park laps. Recommended for warm conditions above +21 °C, with a clear strength in quick-drying performance and minimal insulation when heat management is what matters most.

Further commentary on the TACTICA platform from specialist media reinforces the system approach: Assos positions TACTICA as a modular off-road kit for gravel, bikepacking, and adventure riding, with a focus on durability, storage, and comfort. This fits perfectly with the role of the ST liner as a breathable base layer for touring and moderate trail riding, while HP models cover the performance end of the spectrum. Depending on your terrain — from the trails on Zurich's Uetliberg to the rolling paths of the Bernese Mittelland — you can mix and match precisely without compromising on feel. Media coverage and manufacturer communications consistently highlight technologies like the zeroPressure Waist and the refined Shock‑Absorb pads as key to long-distance riding comfort.