Arc’teryx Men’s Rho SV Zip Neck

Our warmest base layer top, designed for cold weather and easy wear.

Rho

Thermally efficient base layer with excellent moisture management properties. Has stretch comfort.

Breathable material

Allows moisture vapour to escape, helping regulate temperature and elevating comfort inside garment.

Synthetic fibre

Engineered materials that offer enhanced properties or performance.

Multi-use

Versatile high performance designs for diverse activities and conditions.

The Rho SV Zip Neck is our warmest, most technical base layer yet—constructed to keep you comfortable without creating bulk. The synthetic, hollow-core fleece is breathable during high-output ascents and descents, while the zip-neck and extended collar provide an option for extra ventilation or additional coverage, depending on what the conditions call for.

Features & Specs

Technical features

• Warm and comfortable

Construction

• 210gsm hollow-core fleece has an exceptional warmth-to-weight ratio and stays soft to reduce chafing during high-output movement

Design & Fit

• Fitted, with articulated patterning for mobility and comfort

Pocket configuration

• Laminated chest pocket

Sustainability

• Recycled content
• PFAS (Per- and polyfluoroalkyl substances) Compliant

Zippers & Fly configuration

• Full front zip

Size XS, S, M, L, XL, XXLWeight260g / 9.2 ozFitFittedSizing chart

Men’s

Our size guide provides a general idea of how your body measurements correspond to our garments, however it does not fully reflect each item’s unique specifications. Each piece is designed with specific fits tailored to the intended activity, taking into account ergonomics, comfort, layering systems, and optimizing the performance of fabric technologies.

Jacket/shirt sizing chart – new sizing

NOTE: Men’s fit has been updated with a revised fit. Medium size remains unchanged. Smaller sizes are now tighter and larger sizes are now looser. Arc’teryx sizes are intended to fit the above body measurements. If your measurements are between sizes, select a larger size for a looser fit or a smaller size for a tighter fit.

Activity Alpine/Touring/Freeride/ResortModelX000009922Manufacturing facilityMas Active (Private) Limited – Asialine, Sri Lanka

Materials & Care

Materials

• Body: Recycled Octa x Solotex Raschel Anti-shed Fleece, 210gsm – 100% Polyester
• Origin of fabric: JAPAN
• Origin of dyeing: JAPAN
• May release plastic microfibres into the environment when washing

Care

• Machine wash gentle low
• Tumble dry gentle low
• Do not bleach
• Wash dark colours separately
• Do not dry clean
• Do not iron
• Do not use fabric softener

Arc’teryx Layering Guide

Layers are the instruments of keeping you dry, warm and using your energy efficiently. Put into the right systems, a good sequence of layers provides you with weather protection, moves moisture away from your skin, conserves or dissipates heat, and does this in the least amount of time.