Merino Long Johns - Brass Monkeys - Smart Merino New Zealand
Merino Long Johns - Brass Monkeys - Smart Merino New Zealand
Merino Long Johns - Brass Monkeys - Smart Merino New Zealand
Merino Long Johns - Brass Monkeys - Smart Merino New Zealand
Merino Long Johns - Brass Monkeys - Smart Merino New Zealand
Free shipping
over $100 (NZ & AU)
30-day returns
& exchanges
Made in
New Zealand
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Merino Long Johns

$109.95 NZD

Brass Monkeys premium long john pants are made with warmth and comfort in mind. Made in New Zealand with 100% fine merino wool they are designed with a wide waistband they will keep in place no matter your activity, extra leg length & dual-layered crouch protection you can be sure they will keep your bottom half warm when needed most.

Product Highlights

Warmth
& Insulation

Anti-Odour
Protection

Soft &
Comfortable

Moisture
Wicking

Colour: Black

Black

Size: Choose an option Size Guide Ruler Size Guide

S
M
L
XL
2XL
3XL
98%
Delivered within 2 working days from dispatch
Same or next working day dispatch · Fully tracked
Based on our last 90 days of NZ deliveries.
Features
  • FIT: Slim
  • FEATURES: Merino long johns with an extra wide waist band to keep your pants where you want them no matter your activity, dual layer crouch protection for greater protection
  • MATERIAL: 100% merino wool, 215gm2, 19.5 micron, single jersey knit
  • BENEFITS: Soft, warm, lightweight, breathable, odour resistant, form-fitting, itch-free, fast drying, high wicking, flame & static resistant
  • LAYER TYPE: Long Johns, Leggings, Thermal Pants
Shipping & Returns

Shipping

All orders are dispatched same or next working day from our Christchurch, New Zealand warehouse, fully tracked.

New Zealand

Sent via NZ Post Courier.

  • Under $100: $7. 1–3 working days.
  • Over $100: Free. 1–3 working days.
Australia

Sent via NZ Post International Air. Most orders arrive sooner than the timeframes below.

  • Under $100: $20 Express. 3–6 working days.
  • Over $100: Free Standard. 5–7 working days.
  • Over $200: Free Express. 3–6 working days.
North America, UK and Europe

Sent via NZ Post International Air. Customs may add 1–2 working days at the destination.

  • Under $/£/€150: $/£/€25 Standard or $/£/€50 Express.
  • $/£/€150–$/£/€300: Free Standard, or $/£/€25 to upgrade to Express.
  • Over $/£/€300: Free Express.

Standard arrives in 7–13 working days. Express in 4–7.

Rest of the world

Tracked international shipping to 80+ countries, calculated at checkout by weight.

Returns and exchanges

Not satisfied with your order? Easy returns within 30 days. Original shipping, duties and taxes are not refundable.

Care Instructions

Machine wash cool (30°C) on a gentle cycle. Use wool-specific detergent. Do not bleach or tumble dry.

Make your merino last longer.
We’ve written the definitive manual on preventing pilling, storage, and the "Denim Trick."

👉 Read the full Smart Merino Care Guide

Carbon-neutral shipping on all orders

Explore What Sets This Product Apart

Lightweight Warmth and Insulation

Cozy comfort of our Brass Monkeys merino clothing, the best choice for any weather. Brass Monkeys merino is warm, dry, fresh, breathable, and moisture-wicking. Our clothing is snug, stretchy, and light.

Premium Softness, Comfort and Versatility

Enjoy the soft, itch-free luxury of Brass Monkeys clothing: made from merino wool that feels amazing on your skin. Perfect for hiking, skiing, biking, or working. They’re versatile, durable and perfect for any adventure.

Natural Odour-Resistance and Breathability

Brass Monkeys merino wool clothing is naturally anti-bacterial, anti-microbial, breathable, moisture-wicking and fast-drying. Feel carefree and confident - even wearing them for days.

Eco-Friendly, 100% Pure Merino Wool

Our Brass Monkeys range is made from merino sourced from ethical, cruelty-free farms. Merino is naturally biodegradable, water and energy efficient, and renewable - making it the 100% natural choice.

Handmade in New Zealand

Merino is not just a fabric, it’s our culture. Our products are ethically made in New Zealand with quality and care by local experts. Join thousands of Kiwis who love our products and experience for yourself.

Customer Reviews

Overall rating: 4.7 / 5 from 38 reviews.

Customer photo review of Merino Long Johns

My last experience of long johns were the prickly beige ones we got in the army. These ones are form fitting and thin so you can get trousers over them easily. Their performance was appreciated on our recent motorcycle trip to the Himalayas. Wore them every day for a week and no smell. I love that they are made in NZ from NZ wool.

I am very keen to support smaller New Zealand businesses that are manufacturing locally and providing jobs. From a product point perspective, NZ merino fibre is wonderful, and I find your thermal wear to be very well made and comfortable.

As expected. Would get more.

Material is too thin and the fit is too tight.

I should’ve bought the 2XL, otherwise perfect

Pants developed a hole in the fabric next to the seam on first day wear. Haven’t bothered with a return as I live overseas.

At first I wasn't sure about the style - legs are very long. I'm 74 yes old and used to more traditional long Johns but wearing them I've found them very comfortable and easy to move in. Fully reccomend.

Beautiful soft and most important not itchy

Great quality of fabric- much warmer than slightly more expensive brands. Holds shape well. Definitely looking to purchase more of the Brass Monkeys range.

These might be the best of the products I purchased so pleased with them , no overheating or issues at all 😁

Anything made in NZ using natural fibets and local labour just does it for me.

Great product for a great price

Always trust Brass Monkeys Gears. Last for ever. Quality Merino, NZ made, NZ fits. Great. Keep coming back for more over the years. Keep it up!

As always this Brass Monkey clothing is fab- am sure it will be warm and hard wearing. The stronger thicker waist band is a great development.

I've always bought Icebreakers but decided to try these. Very comfortable and keeps you warm. Great addition to my winter gear with this quality product.

Excellent warm addition for the winter months

Don’t hesitate to buy anything from this excellent ETHICAL company.

The long johns are warm and good quality. The fit won’t suit everyone. They’ll fit best if you have long slim legs and a small bum otherwise they bunch up on the legs, pull down at the back and can be somewhat constricting on thicker legs.

Well designed, snug fit, soft and warm - best I have had.

On the plus side, this is a high quality garment which is warm and comfortable to wear and washes well by handwash or machine delicates cycle. I would normally order size M but I have found that merino clothing is very slim fit so I ordered size L and it fits well. Most merino clothing on the market is made in China which raises serious ethical doubts about the treatment of labour and animals, so being made in NZ is a big plus. On the negative side, the lack of a fly opening negates some of the convenience of the male anatomy when an open air comfort stop is needed on the hill but that would not put me off buying more from Smart Merino.

Good recommend

Excellent: I would definitely buy from you again.

Happy as, elastic waistband keeps them where I want them to be, don’t slide down , warm and comfortable

very helpful customer service they knew their product, i'm 35" so normally get 36" size. due to not being slim, but muscly Calf's thighs and buttocks . and spend a most of the time seated in my wheelchair, i required lower back protection so decided to go next size up. worked perfect stays above hips all round when seated, also does not itch, several days on on smell, kept warm. will be buying again.

Its great, comfortable and does the job

I really like the long johns hard to get them off once you put them on. Its that good.

My height and body size determined a garment no, larger than XL. However. The XL garments lasted no longer than one season without tears to the crotch area. So this season I have purchased XXL. These are looser fitting, just as warm as the XL, and only time will tell the last-ability of the garment. The Brass Monkey Marino Thermals are without a doubt the best brand I’ve purchased over many winters.

Really lightweight easy to wear keeps me real warm I use them as PJs as well especially in this freezing winter. Helps keep the heating bills down and ward off aches and pains. Washes real easy and quick too. Will continue to buy more and other products as well. Good to see all NZ made. He tino pai.

I'm very happy of the purchase so far. Reasonably priced, good quality and comfort. Will recommend!

Extra long legs in medium size ensures warm close fitting around ankles. Plenty of leg length to provide excellent well-fitting lower body comfort, nicely finished with distinctive signature waist band.

i havnt had a chance to try them yet

For the rather high price, you would have thought they would make long-johns for men with a fly, as a default, and without a fly (for those going to the South Pole) as an option. I wear long-johns because I have metal in my legs, and cold can be painful. So, I have sent them back and have bought some Merino wool long-johns from elsewhere, with fly, and cheaper. I have no idea if they will be the same quality.

Unfortunately being a big guy , they didn’t fit, not enough room in the bum compartment for me, however a well made and extremely good quality item, I only wish they had of fitted

This is very handy piece of clothing which does keep you warm!

Marino Long Johns were great at Kamloops Skiing in Canada. Not too hot not too cold didn’t get sweaty.

Met all expectations. Excellent product.

Snug fitting and warm just like the rest of my Brass Monkeys apparel. I will keep buying these products as long as they continue to be made in New Zealand.

Great fit. Very comfortable