Splashdowns

61 reviews
Size Chart
Colour
Jet Black
Size

Full-length luxury for committed commuters come rain, hail or deluge. 3 layer HydroFoil™ Plus fabric keeps your long pants dry while spiral zipped leg gussets let you pull them on and off over your shoes without any excess fabric to snag your chain.
+Features
  • Lightweight waterproof-breathable 3 layer HydroFoil™ Plus fabric with fully tape-sealed seams for maximum waterproofness.
  • Zipped fly with gripper elastic waist keeps them hitched up.
  • One piece gusseted crutch.
  • Articulated knees.
  • Zipped rear pocket.
  • Turns into itself to form a tidy package in your backpack or pannier.
  • Hazard!™ reflective labels and piping on lower legs.
  • Zip leg gussets expand to pull over your shoes, then zip up to avoid chain suck when pedalling.
  • Waterproofness: 23,000 mm hydrostatic head with a water-repellent finish.
  • Breathability: 33,000 gm per sqm per 24hrs.
  • Designed & made by us in Aotearoa | New Zealand.
+Inseam Length

The garment's inside leg measurement from crotch to cuff.

S M L XL
83 cm 85 cm 87 cm 89 cm
+Tech

  Weight: 250 gm

+HydroFoil™
Specifically developed for high aerobic activities, HydroFoil™ Plus combines a lightweight ripstop nylon shell with a composite membrane that is completely waterproof, totally windproof and extremely breathable. The outer fabric is the latest new-generation Pertex® Shield+ membrane. It is more than twice as breathable as most other quality waterproof-breathable fabrics, and has a small amount of stretch allowing a closer fit. The outer fabric is treated with a water repellent finish that encourages rain to bead up and roll off, while there is a lightweight tricot mesh on the inside for greater durability and improved moisture dispersion.
  • Composition: 100% nylon with PU laminate.
  • Waterproofness: 23,000mm hydrostatic head with water repellent finish on face fabric.
  • Breathability: 33,000gm per sq.m per 24hr.

+Hazard!™
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.

+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.

+Video

+FAQ

+Benefits of 3/4 vs full-length over trou?
We've extensively tested both full-length and 3/4 waterproof pants over the years. In our experience 3/4's provide the best trade-off between functionality and performance in most conditions - especially for mountain biking, bikepacking and touring.
  • They are easy to whip on and off over your shoes.
  • Repel rain from the most exposed areas - your bum and thighs.
  • Avoid 'chain suck' at your ankles.
  • Minimise overheating when pedalling hard.

However full-length over trou are sometimes best - notably for commuting when you want to keep your long pants dry, or when touring to really cold and/or wet places.

+Washing

  • 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. 

  • Wash with any of the plant-based products listed above. You can also use a specific sport wash like Grangers Extreme Cleaner, Nikwax Tech Wash or Atsko 'Sport Wash'. Around NZ$30 from most outdoor shops. Any stubborn stains should be dabbed not rubbed clean. For grease spots you can use a degreaser like Swarfega. It's aggressive stuff though so take care - it might be best left alone as added character.
  • Keep it clean, but don’t wash too often. General wear along with washing progressively removes the water repellent treatment from the outside the fabric. This treatment helps rain to bead and run off - and enhances the overall performance of the fabric. Dirt, body oil, sunscreen and sweat also attack the water repellent treatment and can cause the waterproof-breathable membrane to delaminate. Wash frequency depends on how often and how hard you use your garment. We suggest at least a couple of times a year - certainly after a muddy mission, an especially sweaty ride, or say half a dozen sessions in the rain. Use your judgement - if the garment looks dirty, the fabric is 'wetting out’ too quickly, or feels clammy then it's probably time for a clean.
  • When the fabric starts 'wetting out', it's time to apply some love. You can help restore the water repellent treatment after washing by line-drying your jacket, then chucking it in the dryer using a warm (not hot) cycle. This 'recharges' the treatment so it lasts a bit longer. When this trick no longer does its magic you can beef up the original treatment to some extent with a product like Nikwax TX Direct - $39 from Ground Effect. A bottle is good for two or three rounds with your jacket. The effectiveness of this process depends on the age and condition of your jacket.
  • Note that while the fabric's wetting-out impairs performance, particularly breathability, the HydroFoil laminate should still be waterproof.
  • Always ensure your HydroFoil garment is completely dry before storing. Putting it away damp can destroy both the water repellent finish and the waterproof coating. Hanging on a hook or coat hanger is best. Take care of your gear and it will take care of you.
 

+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
    5.0 Based on 61 reviews
    5 ★
    97% 
    59
    4 ★
    3% 
    2
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    Filter Reviews:
      TK
      09/06/2022
      Thorsten K.
      New Zealand

      Great to wear pants

      Bit snug at the top for comfort. One size larger made all the difference.

      AF
      08/06/2022
      Allan F.
      Australia Australia

      Did the job

      I needed a cycling specific pair of overpants to tackle the Mawson Trail in early June. I already have the helter skelters which have been great but wanted full length duds for the trail. Had a couple of cold, wet, windy days and was very pleased with my purchase. The Splashdowns kept me dry and made riding in rubbish weather so much more bearable. They feel good, look good and work good. More quality GE stuff.

      HK
      14/05/2022
      Hayley K.
      New Zealand New Zealand

      Splashdowns

      Totally worth it. Dry as at the end of the day

      SB
      05/04/2022
      Stuart B.
      New Zealand New Zealand

      Splashdowns Satisfaction

      The Splashdowns are light, dry and very comfortable to wear. The leg zips make then very easy to slip on. They breath well so are not too hot to wear if it stops raining. Being light they are easy to carry in a back pack and take up very little space to stow.

      NS
      31/10/2021
      Nicola S.
      New Zealand New Zealand

      Splashdown Success!

      Bought these waterproof pants as a gift for my partner, he loved them but I’d got the size wrong. The team at Ground Effects were brilliant, quick to respond & I had them swapped for the right size in no time. Great systems, great service, great product.