There are loads of base layer options out there… and honestly, why wouldn’t there be?
The main choice usually comes down to merino wool or synthetic fabrics—so what’s the difference?
Merino wool is a natural, highly responsive fibre that adapts to your body temperature. Unlike synthetics, it helps keep you cool when you’re hot and warm when you’re cold, thanks to thousands of tiny air pockets that trap heat when needed. Merino also excels at moisture management: it wicks sweat away from your skin, absorbs it into the fibres, and locks away odour-causing molecules. The result? Less smell and more wear between washes (your friends will thank you). The downside? Merino usually comes with a higher price tag.
Synthetic base layers also offer strong moisture-wicking performance, pulling sweat away from your body so it can evaporate quickly. Most synthetic fibres are hydrophobic, meaning they don’t absorb water, stay lightweight when wet, and dry fast—often slightly faster than lightweight merino, though the difference isn’t huge. The main drawback is odour: synthetics tend to hold onto smells. Some manufacturers apply anti-microbial treatments, but these can fade over time. We’ve found that using Grangers Active Wash for synthetics helps keep odours at bay—at least straight after washing.
On the plus side, synthetics are generally more affordable than wool.
The Dart Long Sleeve T shirt is a classic, all season, all mountain technical base layer. The 100% recycled APEX ECO fabric perfectly balances warmth, wicking and breathability and is finished with POLYGIENE permanent odour control for multi day freshness.
Crafted using core spun technology, the Malli Half-Zip Long Sleeve is a durable, versatile base layer perfect for cold weather layering. This enhanced design features a half-zip for instant and easy temperature regulation. Made from a premium Merino wool blend, the fabric offers natural anti-odour control, thermal efficiency, and moisture management. Alongside this highly effective lightweight fabric, the low-profile merrow stitching and ergonomic fit ensure next-to-skin comfort and unrestricted movement, making it the ideal choice for multi-day trips and dynamic pursuits.
The staple long sleeved tee for mountain people. Lightweight, breathable and comfy as a base or standalone layer. Simple, lightweight and fast drying the Force Tee slim fit long sleeve tee is perfect for mountain activities. Whether you’re hiking, climbing or mountain running, it’s soft next to your skin and wicks sweat quickly. Built with Motiv fabric with an odour control finish, it’s ideal for multi day adventures, packing down small and still useable on day two.
Merino Long sleeve half zip base layer. The 200gsm Merino is designed to keep you warm in cooler temperatures by reminding breathable. It helps your body regulate its temperature when you’re pushing yourself to the limits.
