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Assos Mille GT Long Sleeve Jersey S11 EVO Info

The Assos Mille GT Long Sleeve Jersey S11 EVO is an everyday training jersey built for warm-weather riding, updated with a lighter construction, a cleaner pocket system, and full-arm sun protection. At 132 grams, it disappears on the bike — the kind of jersey you reach for by default when the temperature climbs and the rides get long.

Two fabrics do the work here. The body is AirCell, Assos's ultralight circular knit with an open hexagon structure that pulls air through and expels heat while you ride. It has a bistretch quality that wraps the torso without restriction, and engineered odorControl keeps things fresh across back-to-back efforts. The sleeves are a different story — Eclipse, a warp-knit textile with an ultrasoft skin feel and UPF 50+ protection that extends sun coverage from shoulder to wrist. It's a thoughtful combination: maximum ventilation where your core generates the most heat, and meaningful sun protection where your arms are most exposed. Assos notes the jersey is so lightweight they recommend applying sunscreen beneath the body panels on long days in the sun.

The S11 EVO generation refines what was already a well-regarded design. The pocket system still uses Assos's Triple Ramp construction — flexible fabric panels that form stabilizing lids over the pockets, keeping contents secure when you're pushing hard — but the seam count is reduced and the silhouette is cleaner. The sleeves borrow their Raw Cut, lie-flat construction from the Racing Series, trimming the profile and reducing wind catch. The Stabilizer V11 back panel keeps pocket load from sagging during longer rides. This is an Endurance-line jersey built with Racing-line details, and the result is a piece that performs well above its price point.

Specs at a Glance

Weight: 132g
Body Fabric: AirCell — ultralight circular knit, open hexagon structure, odorControl; 80% polyester / 20% elastane
Sleeve Fabric: Eclipse — lightweight warp knit, UPF 50+; 86% polyester / 14% elastane
Back Panel: Stabilizer V11 — reduces pocket sag; 100% polyester
Pockets: Triple Ramp — flexible stabilizing lids; 76% polyamide / 24% elastane
Fit: regularFit
Temperature: >69.8°F / warm conditions
Breathability: 5/5 | Quick Drying: 5/5 | Packability: 5/5
Sustainability: OEKO-TEX certified textiles, PFAS free
Colors: Blackseries, Deep Petrol, Golden Yellow, Whiteseries, Edge Green
Sizes: XS–3XL

Design Benefits

AirCell keeps you cooler than virtually any comparable fabric — the open hexagon structure creates airflow channels that work continuously, not just when you're sprinting. On long summer rides, that difference accumulates.
Eclipse sleeves add real sun protection without adding weight or warmth — UPF 50+ from shoulder to wrist is a meaningful upgrade over a short-sleeve jersey and a light arm warmer, and the fabric feels nothing like a sun sleeve.
Triple Ramp Pockets hold their shape under load — the flexible lid construction keeps food, tools, and layers secured whether you're climbing at threshold or descending at speed.
Raw Cut sleeve construction reduces aerodynamic drag — borrowed from Assos's Racing Series, the lie-flat finish eliminates bulk at the cuff and keeps the sleeve profile tight throughout the pedal stroke.

The RA Perspective

The Mille GT Long Sleeve Jersey has been a staple in our warm-weather kit recommendations for a while, and the S11 EVO makes a good thing noticeably better. The AirCell body has always been exceptional — it's one of the most breathable fabrics Assos makes, and at 132 grams you genuinely forget you're wearing it. What the EVO adds is the Eclipse sleeve, and that's the detail that changes how you plan your rides.

A full UPF 50+ sleeve means you can head out on a long summer day without stacking a short-sleeve jersey and separate arm coverage. The Eclipse fabric is soft enough that it doesn't feel like sun protection — it just feels like a sleeve. Combined with the AirCell body, the thermal balance is right: your core stays cool while your arms stay protected.

The pocket updates are worth noting too. The Triple Ramp system was already solid, but the cleaner seam construction and reduced bulk make this feel more refined than the previous generation. We've found the pockets hold well on fast descents and rough pavement, which matters when you're carrying two gels, a jacket, and a phone.

At $180, the Mille GT LS S11 EVO is priced fairly for what it delivers. It's not a race-day jersey — it's the jersey you wear on the rides that matter most because they happen most often. If you're logging consistent miles through spring and summer and want a single long-sleeve piece that handles heat, sun, and distance equally well, this is the one we'd reach for.