53 reviews
Size Chart
Agent Orange
Azure Blue

This colour/size is temporarily out of stock. We're making some as fast as we can. For orders placed today we'll aim to get one to you in 2-3 weeks. If you can't wait that long then perhaps consider another colour (if available).

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 option keeps you in the spotlight.

  • Full length front zip.
  • Silver mesh sides for maximum breathability.
  • microFoil™ front and back deflects cold wind and drizzle.
  • Hi-visibility Agent Orange option helps you stand out in dim light.
  • Hazard!™ reflective logo at rear, and reflective piping on chest and back.
  • Zip chest pocket for cell or shades.
  • Designed & made by us in Aotearoa | New Zealand.

  Weight: 120 gm

Gossamer-light Pertex® shell fabric weighing just 49 gsm. Tightly woven 20 denier semi-dull nylon blocks wind while a durable water repellent finish (DWR) resists 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 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 EcoverEcostoreEarthwise 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. 

Customer Reviews
4.7 Based on 53 reviews
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Filter Reviews:
    Elly d.
    New Zealand New Zealand
    Tiny but a Big Difference

    I just love this new garment replacing an annoying other brand. However I think all ladies should carefully measure their hip width as it is a bit tight there.

    Chris M.
    Australia Australia

    A fantastic garment. Stands up to everything that is detailed on the Ground effects webpage. Very light, folds up easy, Highly visible and love the phone pocket on the front. Maybe add some fury stuff around the collar to keep neck warm but this is my suggestion.

    Chris B.
    Australia Australia
    Red Hot New Orange Vespa

    Bright orange or red Vespa is back. This colour is brighter than the fluoro yellow green version in my view which I also bought recently. It should also show marks, stains less easily. Both Vespas crush easily into a tiny ball in ones pack, pannier etc just ready to leap out and show the world that a cyclist is on the road and guess what , no batteries are required!

    Peter R.
    Australia Australia
    5 Star Vespa

    Terrific cover for the in-between days when its a chilly wind that bites thru the jersey. Rally compact & light to stow in your back pocket.

    Jean C.
    New Zealand New Zealand
    I like it

    I purchase the blue Vespa in Blue size M and found this too big. Unfortunately Blue is not available in S, but I have an Orange one now and very happy the size is perfect. Thank you.

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