Seamless knitted merino arm warmers to extend your short sleeved Median Strip or Hula riding top into a winter assault weapon.

    • Toasty merino wool inner and hard-wearing nylon outer.
    • Soft knitted non-gripper elastic cuffs.
    • Knitted with elastane for a snug fit.
  • ▹ Merino-Nylon

    Toasty Merino wool knitted sock with nylon plated to the outside for durability. Blended with elastic for stretch.
    • Composition: 42% merino; 24% elastic; 19% lycra; 15% nylon.

    ▹ More than Kiwi Made

    Ground Effect clothing is crafted right here in New Zealand. Has been ever since we started back in 1994. Manufacturing locally works for us. We operate a quick-response system - holding minimal stock of any one item, but churning out a few more quick-smart when the pile gets low. The upshot is that we are seldom caught with our shelves empty, so orders get despatched the same day you place them.

    ▹ Weight

    Garment Weight: 74 gm
    • All Ground Effect clothing enjoys a warm 40ºC machine wash. Try to avoid cold-water detergents and those with bleach, 'oxygen whitener' or fabric softener.
      • The cold-water varieties have little enzymes that are super-charged to brave the cold but can damage technical fabrics and cause skin irritation. 
      • Bleach rots natural fibres like merino, strips the dye, attacks laminates of waterproof fabrics and can also cause skin irritation.
      • Sodium Percarbonate (the main ingredient in oxygen whitener) can make colours run.
      • Fabric softener and stuff containing it like wool wash destroys the water repellent finish on waterproof and water resistant fabrics, and can cause colours to run. 
    • As a rule of thumb, a product that is easy on the planet is also easy on your body. Select a mild plant-based soap like Ecover, Ecostore, Earthwise or Aware.
    • Hand washing is sometimes the only option on tour, but a washing machine rinses more thoroughly and is preferable if you have the choice.
    • Most Ground Effect gear dries super-fast so hanging on the line or drooping over the bedpost is generally the best option. High heat can damage some fabrics so if you do take your threads for a spin, set the device on 'medium' or 'warm' rather than hot. A lap in the dryer is recommended for your rain jacket, after it has dried on the line, as it helps recharge its water repellent finish. 

    • Wash colours separately.


Made by: Ground Effect in New Zealand

Customer Reviews

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  • Reviews (21)

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Scoti W.
New Zealand

peak performance

Amazing warmth and versatility. I have been using the Amadillos for each morning commute ride here in Christchurch during the past month of cold and wet weather. Amazing! no loss of warmth to the forearms. Also used at work as an extra layer of warmth. Highly recommend

Warren S.

Armadillos arm warmers

Snug and warm even if they get damp. Also probably the best fitting arm warmers I've worn. So it's a Win / Win IMO.

Glenn G.

Warm and wind proof

These are a great improvement from my lycra arm warmers.

Muni C.

My new base layer

So nice having genuine arm warmers now. (Rather than cut offs from the op shop). These babies are snug and warm, and coupled with some knee caps I wear them instead of thermals. So easy to get on and off. Wellington commuting and cycle touring essentials

Ken M.


They're really great for during sports games - easy to get on and off. They also stay on really well