The Smartwool Outdoor Merino Base Layer Crew Men’s Thermal Top is a premium performance garment engineered to provide ultimate next-to-skin comfort across all seasons. Designed for versatility, this technical shirt functions flawlessly during intense activities like high-altitude alpine hiking, fast-paced bikepacking, and multi-day backcountry travel. By utilising a high-performance Merino wool and CoolMax EcoMade blend, it delivers the exceptional natural benefits of performance wool alongside the high-strength characteristics of advanced synthetics. It balances climate control with incredible longevity, making it an essential piece of equipment for any dedicated outdoor enthusiast looking for reliable performance in fluctuating weather conditions.

Key Features:

  • Premium Material Blend: Composed of 50% Merino wool and 50% COOLMAX EcoMade recycled polyester to maximise technical performance.
  • Optimal Temperature Regulation: The knit construction relies on natural wool properties to deliver continuous temperature regulation, keeping you warm in freezing conditions and cool during high-output summer pushes.
  • Advanced Moisture and Breathability: Maximises breathability by actively pulling sweat away from the skin to speed up drying times.
  • Natural Odour Resistance: Inherently utilises the antimicrobial defences of premium merino to provide excellent odour resistance, making it perfect for multi-day trekking without a wash.
  • Enhanced Durability: Infused with recycled technical fibres to drastically improve overall fabric durability and resistance to trail wear.
  • Chafe-Free Construction: Features strategically placed flatlock seams along critical areas, combined with merrow stretch stitching, to prevent friction and maximise your overall range of motion.
  • Athletic Profile: Tailored with a slim fit that cleanly tracks the contours of your body, ensuring effortless, bulk-free layering under heavy jackets or backpacks.
Yes, with its stylish cut, it can be worn for casual daily wear as well was outdoor activities.
Yes, they should fit snugly like second skin without restriction of movement. A close fit is necessary for the moisture-wicking property to work efficiently and provide temperature regulation.
If washed properly, it should retain its shape and size. Air dry them flat on a clean towel, or select the lowest heat and tumble dry settings. It is advisable to avoid extreme heat and harsh agitation to the prevent the wool fibres from felting. Fabric softeners and bleach may also permanently damage the wool fibres.

Brand : Smartwool

SKU: SMWL-SW003090

Model # : SW003090

Gender : Mens

Clothing Type : Tops

Sleeve Length : Long

Materials : 50% Merino Wool |50% COOLMAX EcoMade Recycled Polyester

Free shipping on orders over $140 to Australia*
Shipping on small orders (under $140) only $9.95
Shipping on all orders to NZ only $9.95
Express shipping to Australia & NZ only $15

Standard Shipping (AU) – FREE on orders over $140 and $9.95 on orders under $140. Orders are dispatched within 1 business day. Click here for shipping delivery times

Select ‘Standard Shipping – Auspost Only’ if you would prefer your parcel is sent with Auspost. Otherwise it will be shipped with any of our available carriers. Auspost Only shipping is not available on some very heavy/bulky orders.

Express Shipping (AU/NZ) – Need it faster? Express Shipping is available for $15. Express Shipping is not available on heavy/bulky orders. Orders placed before midday on business days are usually dispatched same day (otherwise within 1 business day). Delivery times in the table below.

Click and Collect – Shop online and collect in our Milton, Brisbane store, free for all orders. Orders are usually ready within 2 hours (during opening hours). Click here for address and opening hours.

Terms and conditions apply, click here for a full overview of our shipping policies

  • If you have selected the wrong product/size for you, or want to exchange/return for any reason except for warranty or our error, this is referred to as a 'change of mind' return.
  • Not all products are eligible for change of mind returns (click here for excluded products).
  • Once you submit a Return Request, we will provide return instructions via email (along with a prepaid return label if applicable). Please wait to receive this before returning any items (Try 2 Anything excluded)
  • Change of mind returns can be resolved by your choice of exchange, full store credit, or a refund. Refunds are subject to a $19.95 admin fee.

For a full overview of our returns and warranty policies, see Returns and Warranties

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