Extra protection for your neck, nose and chin when Jack Frost turns from playful to severe. Heatwave Merino keeps you toasty and well covered should there be a 'stand and deliver' moment mid ride.

    • Heatwave hi-performance thermal fabric combines a merino inner layer with a fast-drying polyester outer.
    • Cosy, but not quite as toasty as the Black Hole made from Hot Shot™ stretch merino.
    • One size fits all.
  • A bi-component thermal fabric combining 51% merino wool and 49% polyester. Superfine 18.5 micron New Zealand merino wicks sweat away from your skin while the polyester provides a durable, non-pill outer. Lightweight at just 160gm/m2 and machine washable. Developed by Ground Effect and knitted just for us.
    • Composition: 51% merino; 49% polyester

    ▹ Man vs Wild

    Merino is unrivalled for comfort as a body layer. It absorbs more moisture than synthetic fibres, mopping up excess sweat rather than letting it settle and cool on your skin. However high-aerobic activities like cycling will often overload ordinary merino. Heatwave's polyester component repels moisture to avoid total saturation of the fabric - so it dries faster to keep you toasty.

    ▹ Snug-as-a-Bug Fit

    Heatwave™ Merino tops are intended to hug your body, ensuring the fabric sits against your skin to wick sweat away - keeping you dry and not chilling out.

    ▹ Hot 'n' Cold

    As a single garment Heatwave™ Merino regulates your temperature through a wide range of conditions. Delivering comfort in all but the hottest climes. Yet it is versatile enough to layer under a WindFoil™, microFoil™ or HydroFoil™ shell in winter.

    ▹ 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: 60 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 (33)

Thanks For Your Review

We value your feedback. If you're stoked with your Ground Effect kit then you might like to share it (the review not the gear) with your mates. Thanks again.
Colleen T.
New Zealand

Scruff review

Wearing our scruffs on a cold wintery day in Taupo keeps the gap between cycle helmet and neck line toasty warm. Glad we have them as we are booked to do the alps to ocean trail end of September so will need them to keep us warm

Shirley T.


My scruff is comfortable and light-weight to wear and great for extra warmth around my neck.

Andrew H.

Scruff by name...

But not in reality! Great design & materials, doesn't ride up like many do & can handle being worn a few times before needing a wash.

Janet S.

Blue Scuff = Warm neck

I was about to do more than normal winter riding in the Central North Island and also the Heaphy Track and was keen to keep warm. It compacts small and can be carried in your bag just incase. Great for keeping the neck warm and I like the fact that it V's down your neck a bit more than a standard buff. It was loose enough around the neck to not feel too tight.

Rangi F.


There's always wind when you're cycling, so the scruff is excellent to tuck around your neck in light or strong winds. Looks good too and wrap around your head as a bandanna. Extra length to tuck down the back and front of you neck. Recommend!