Thermal Underwear

BIG SALE | More than 100 styles on Merino Knitwear made in New Zealand | Click on "Read More"

  • Add to your cart any style/product featured here as prices are automatically adjusted for the offer.
  • Multibuys that normally apply to Bay Road styles 40001, 40002 and 40018 have been suspended for the duration of this sale.
  • Offer began 9.30am NZT Thursday 5th June and ends Midnight NZT* Monday 16th June 2025, while stocks last.
  • Offer excludes styles marked "TO CLEAR" as they have already been permanently reduced in price.
  • Offer won't apply to any orders placed/received outside the abovementioned time period.
  • *Midnight NZT = (same day) 10pm AEST = 8am EDT = 1pm BST = 2pm CEST

Merino wool is the finest and softest wool available and New Zealand produces some of the best, superfine Merino wool in the world.
100% natural and sustainable, New Zealand Nature's machine washable, merino wool knitwear, thermal underwear and socks are made from it.

  • Merino wool is stunning. It dyes well, holding deep and brilliant colours, and drapes beautifully.
  • Merino wool is much finer than traditional wool making it smooth against your skin (no itch!) and wonderfully comfortable to wear.
  • With many more fibres contained in the fabric it traps more tiny air pockets and locks in body heat, making it a super insulator.
  • Merino wool clothing & knitwear is highly breathable because the individual fibres breathe as well as the fabric, and it wicks moisture away from your body, releasing it into the air. This helps to regulate your temperature keeping you warm in cold weather and cool in hot.
  • The natural anti-microbial properties of Merino wool make it odour resistant - another big advantage over synthetic fabrics.
  • Merino wool knitwear will absorb up to a third of its weight in water without feeling clammy and retains some of its warmth even when very wet.
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Items 17-27 of 27

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  1. Thermerino Long Sleeve Top
    Thermerino Long Sleeve Top
    SKU: 40615
    Special Price AUD$89.96 Regular Price AUD$99.95
    10% Off | Limited Time
  2. Superfine Merino Thermals - Plain Leggings
    Superfine Merino Thermals - Plain Leggings
    SKU: 40620
    Special Price AUD$69.26 Regular Price AUD$76.95
    10% Off | Limited Time
  3. Superfine Merino Thermals - Camisole
    Superfine Merino Thermals - Camisole
    SKU: 40600
    Special Price AUD$98.10 Regular Price AUD$109.00
    10% Off | Limited Time
  4. Superfine Merino Thermals - Singlet with Lace
    Superfine Merino Thermals - Singlet with Lace
    SKU: 40621
    Special Price AUD$58.46 Regular Price AUD$64.95
    10% Off | Limited Time
  5. Thermerino Leggings
    Thermerino Leggings
    SKU: 40614
    Special Price AUD$76.46 Regular Price AUD$84.95
    10% Off | Limited Time
  6. Supersoft Merino Cotton Singlet
    Supersoft Merino Cotton Singlet
    SKU: 40628
    Special Price AUD$51.26 Regular Price AUD$56.95
    10% Off | Limited Time
  7. Supersoft Merino Cotton Camisole
    Supersoft Merino Cotton Camisole
    SKU: 40627
    Special Price AUD$42.26 Regular Price AUD$46.95
    10% Off | Limited Time
  8. Superfine Merino Thermals - Boy Leg Briefs
    Superfine Merino Thermals - Boy Leg Briefs
    SKU: 40622
    Special Price AUD$35.96 Regular Price AUD$39.95
    10% Off | Limited Time
  9. Thermerino Short Sleeve Top
    Thermerino Short Sleeve Top
    SKU: 40616
    Special Price AUD$76.46 Regular Price AUD$84.95
    10% Off | Limited Time
  10. Superfine Merino Thermals - Reversible Camisole
    Superfine Merino Thermals - Reversible Camisole
    SKU: 40610
    Special Price AUD$46.76 Regular Price AUD$51.95
    10% Off | Limited Time
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