92 reviews
Size Chart
Agent Orange
Azure Blue

Speed-of-light wind protection for hammering the tarmac or commuting to the coal face. This ultra-lightweight vest scrunches down to nothing. Its mesh sides let the hard work escape, and aspirant Houdinis can wriggle in and out of it while cruising at the back of the bunch. Hi-visibility Agent Orange or Limelight keeps you in the spotlight.
  • Full length front zip.
  • Silver mesh sides for maximum breathability.
  • microFoil™ front and back deflects cold wind and light drizzle.
  • Hi-visibility Agent Orange or Limelight helps you stand out in dim light.
  • Hazard!™ reflective logo at rear, and reflective piping on chest and back.
  • Zipped chest pocket turns into itself to form a tidy bundle about the size of a small rodent.
  • S and XXL sizes in selected colours only.
  • Designed & made by us in Aotearoa | New Zealand.

  Weight: 110 gm

Gossamer-light Pertex® shell fabric weighing just 49 gsm. Tightly woven 20 denier semi-dull nylon blocks wind while a water repellent finish resists light drizzle. There is no coating for enhanced breathability. Mini ripstop weave with slight mechanical stretch ensures a performance fit.
  • Composition: 100% nylon.

Night travel is a spooky experience. Many Ground Effect garments feature our Hazard!™ reflective logo and piping to help remind traffic that we're on the road too.

Ground Effect tops are cut with extra length in the back... and in the sleeves too. So when you stretch out in search of the perfect downhill position, neither your shirttail or sleeves will ride-up to expose your back or wrists to the elements.

+More than Kiwi Made
Ground Effect clothing is crafted right here in Aotearoa | 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.


  • 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 EcostoreEarthwise 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. 

  • 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
    4.7 Based on 92 reviews
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    Filter Reviews:
      Clive B.
      New Zealand

      Versatile Garment

      Typical Ground Effect quality garment beautifully made. It was a replacement for my ancient Vespa. However it is made of a different fabric which I found flaps noisily in the wind which was an issue on my road bike but less so on my mountain bike. It’s probably more water resistant but realistically none of these type of garments offer much rain protection so overall preferred the original version

      Mathew O.
      New Zealand New Zealand

      Windproof and visible

      Perfect for the ride to work in the cold winter mornings. Stops the wind and makes me more visible to car drivers. Packs down nice and small.

      John A.
      New Zealand New Zealand

      Does the trick

      Everything you'd want in a bit of bike gear . All good thanks.

      Ian B.
      New Zealand New Zealand

      Vespa vest

      A wonderful piece of kit. As described packs down small and helps with the windchill factor.

      Geoff H.
      New Zealand New Zealand

      A Essential Piece of Kit

      My second Vespa and only because the first was a little snug. When the temperature is 12 degrees or less, this is an essential top layer to block that air from blowing through the other layers. It also is a great blocker of light drizzle. Add to this the HiViz colours and it gets worn if visibility is critical. If it actually isn't required, it costs virtually nothing to stow away. There are a few changes between the older (4 yrs) and new Vespa: the shoulder panel is now one piece and the reflective piping that was across the bottom of this has moved to the neck and is narrower. The material seems to be a little noisier though this may just be because the newer garment hasn't been washed yet.