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7 reviews
Jet Black

Pull on these Hot Shot™ Merino arm warmers to extend your short sleeve Median Strip or Hula riding top into a winter assault weapon. Then push them down to your wrists when you hit operating temperature or global warming bites.
  • Fast-drying, 4-way stretch Hot Shot™ Merino.
  • Gripper elastic at hem keeps them hitched up.
  • Hazard!™ reflective logos on each wrist for night time visibility.
  • Designed & made by us in Aotearoa | New Zealand.

  Weight: 90 gm

+Hot Shot Merino™
4-way stretch winter luxury uniquely combines superfine NZ merino against your skin with a tightly knitted, hardwearing nylon outer and lycra to stretch and move with your body. Warm as pie.
  • Composition: 38% merino; 46% nylon; 16% lycra.


  • 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 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.

+ Shipping
  • Items are generally packed and sent the same day your order is received.
  • Costs $7 by overnight courier within New Zealand.
  • NZ$7 by tracked airmail to Australia.
  • Around NZ$15-25 by tracked airmail to destinations elsewhere in the world - calculated in our shipping cart as you check out. 
    • More shipping and tax details in our FAQ.
    Customer Reviews
    4.9 Based on 7 reviews
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    Filter Reviews:
      A Ground Effect Customer
      Warren S.
      New Zealand New Zealand


      Want to keep your arms warm- use Yoyos

      Guri S.
      Australia Australia

      Arm and leg warmers.

      Excellent product, excellent service and excellent timing. No reason to look anywhere else !

      Michael L.
      New Zealand New Zealand

      Great but check sizing closely

      Useful addition to my cycling kit, just need to be aware that length is generous but don’t buy smaller to compensate. Looking closer men’s and women’s are same size for small, medium, large but I think diameter is closer to female. I

      New Zealand New Zealand


      used sizing chart and they're a great fit. Real comfy and just the job. Will likely get some summer arms too now :-)

      Bob R.
      Australia Australia

      Yoyos Happiness

      I recently purchased a pair of yoyos arms along with three pairs of Sonic niks. The Sonics were replacements for the three pair that I bought about a decade ago; (I ride about 200 kms a week). So back for more of the same thank you very much. First time with the yoyos though, and I am very happy with them. They stay up on my arms and keep me warm on those early morning winter rides. They are certainly of the quality that Ground Effect customers have come to expect. Highly recommended.