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The Arc'teryx Rho Merino Wool Crew Neck Top delivers natural performance across multiple activities with its innovative 240gsm 18.5 Merino construction that wraps around a durable nylon core for exceptional longevity. Featuring body-mapped articulation that follows your movements during technical pursuits, this versatile base layer naturally regulates temperature and fights odor during multi-day adventures from alpine climbs to backcountry tours.
240gsm Mountain Merino Wool – 95% Wool / 5% Elastane
Chira™ 6.5oz (220gsm) Stretch Contrast – 71% Nylon / 29% Elastane
bluesign® Approved Material
Wool is sourced from humanely raised, non-mulesed sheep.
Responsible Wool Standard (RWS) – The wool in this product ins 100% RWS certified by IDFL (No.TE-99950273).
Fitted – Arc'teryx's trimmer fit is patterned to stay close to the body through the chest, waist, hip, and thigh. Its low profile eliminates bulk, moves with the body, and fits comfortably under outer layers.
Crew Collar
Strategically Placed Seams – Increase comfort and reduce chafing.
Flatlock Seam Construction – Improves next-to-skin comfort.
Merrow Stitch Seam Construction – Reduces seam size and irritation.
Ultra Fine Merino Wool – Know for soft comfort, natural temperature regulation, moisture management, and odor resistance.
Merino fibers are wrapped around a nylon core for added durability.
Care Instructions – Machine wash gentle medium. Tumble dry normal low. Do not bleach. Wash dark colors separately. Do not dry clean. Iron low. Do not use fabric softener. Use wool detergent. Remove immediately. Do not wring.