Synthetic

The Rho Heavyweights – Arc'Teryx's warmest base layer tops – are made for cold days and mixed output. On the move, the Polartec® Power Stretch® Pro stretches for outstanding freedom of movement. During rest phases – or when it gets really cold – the fleece’s soft brushed interior traps heat to keep you warm. The fleece’s durable nylon outer has a smooth face for comfort under layers, the tall collar extends warmth, and the deep front zipper aids heat dump and makes on-and-off easier. The Rho Heavyweight Zip Neck was previously the Rho AR Zip Neck.

An exceptionally light base layer that manages moisture and controls odor beneath second-skin cold-weather layers or as a standalone top during indoor training. Thermal, weatherproof equipment is no longer the bulky PVC rain capes and adapted ski jackets of decades past, so—at the request of Assos' WorldTour riders—they tailored a long-sleeve base layer to provide summer-worthy wicking and odor control that fits unobtrusively beneath race-tuned equipment like our Spring Fall Jersey or Jacket. In cool or cold weather, transporting internal moisture is as important as keeping the external elements out, especially during intense training or racing, when a series of intervals, hill repeats, or attacks can lead to lingering moisture, a clammy chill, and frigid misery. Alternatively, full-arm wicking is a must for indoor training, when moving through the air isn’t constantly keeping your arms dry.

A hyperlight short-sleeve base layer, body-mapped with two types of open mesh for maximum airflow and moisture transfer during indoor training and the hottest racing conditions. The SUPERLÉGER was developed primarily for two specific applications. The first addresses the demands of speed-focused riders who train and race indoors, where the upper body layer needs be as light, breathable, and moisture wicking as possible. The second application is for the hottest outdoor racing conditions, where the same considerations also apply, but where a less revealing front mesh panel adds a touch of welcomed coverage while fully unzipped.

The pro cyclists we work with know the importance of the right base layer for the conditions. The Pro Mesh is made for the widest range of conditions and is designed to keep you dry in cool to mild temperatures. We’ll even put it under a Flanders Warm base layer in the coldest conditions. We’ve given it a graphic print so you can show off that you have something special when you open your jersey zip.

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pure odor control keeps things fresh. Fair Trade Certified™ sewn.

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pure odor control keeps things fresh. Fair Trade Certified™ sewn.

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pure odor control keeps things fresh. Made in a Fair Trade Certified™ factory.