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Arcteryx RHO Heavyweight Mock Neck Top - Women's

Arcteryx RHO Heavyweight Mock Neck Top - Women's
  • Color: Black
  • Color: Moonlit
Please select options


The Rho Heavyweights – Arcteyx'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 mock neck extends warmth, and a kangaroo pocket stashes your smartphone and warms your hands.

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

Versatile high performance designs for diverse activities and conditions.

All Round
High performance weather protection and materials, emphasizing versatility for multiple activities.

Synthetic fleece textiles with stretch, warmth and air permeable properties. Offers durability.

  • Versatile
  • Moisture-wicking
  • Durable
  • Warm and comfortable
  • Polartec® Power Stretch® Pro combines a highly durable nylon face with a soft, comfortable, moisture wicking brushed polyester interior
  • Thumbholes help keep sleeves down and make layering easy
  • Trim fit makes it an ideal layering piece
  • Mock neck
  • Articulated patterning for unrestricted mobility
  • Sleeve pocket with zip
  • Kangaroo pocket
  • Contains materials that meet the bluesign® criteria


  • Self: Polartec® Power Stretch® Pro - 53% polyester, 38% nylon, 9% elastane - bluesign Approved Material

Weight: 300g / 10.6 oz

  • Machine wash in cold water.
  • Wash dark colours separately.
  • Do not use fabric softener.
  • Hang to dry.
  • Do not iron.


Arcteryx Designs

Part Numbers

Option UPC Store SKU
Black / Medium 686487920545 SHI571155552
Black / Large 686487920538 SHI573810952
Black / X-Large 686487920569 SHI57890572
Moonlit / Medium 686487944367 SHI591312922
Moonlit / Large 686487944350 SHI591029192