Men's Base Layer
Ascender Merino Base Layer Long Sleeve
Take your base layer up a knit, with the Ascender Merino Seamless Long Sleeve. Engineered for on-skin fit, comfort and performance, our warmest base layer yet is thermo-mapped to breathe, stretch and shape where you need. No scratchy seams, no synthetic stink.
Features
- Merino Wool and Tencel™ blend - regulates your temp, resists odour and oh-so soft
- Thermo-mapped - warmth, breathability and shaping where you want it
- Seamless knit fit - no itch, no scratch, just next-level performance
- Raglan sleeve with underarm gusset - made to move and breathe with you
- Crew neckline - ribbed for comfort (and style)
Fabric & Fit
- Fit: Slim
- Type: Merino Tencel™ Seamless
- Weight: N/A
- Blend: 50% Wool, 21% Lyocell, 25% Polyamide, 4% Elastane
What’s so epic about Merino Wool?
Merino Wool is the OG performance fibre, crushing it since way before oil-derived synthetics arrived. Cool when it’s hot, warm when it’s not, just as epic when wet and never stinks. We’ve tapped into the natural perks of this legend, while adding a new-school spin to meet the needs of mountain bikers, skiers, snowboarders and mission-seekers.
To ensure the highest standards of animal welfare, environmental care, and social sustainability, we use ZQRX-certified Merino Wool.
Shipping & Returns
This item qualifies for free shipping.
Free delivery within USA for all orders over $150.
Order are processed and dispatched the next working day. Orders received on Saturdays, Sundays, and Public Holidays will be processed on the following business day.
Target delivery is 2-3 business days.
Return Information
Returns are accepted within 28 days of purchase provided items are in new and unworn condition.
Restrictions apply, read our full returns policy here.
Reviews
Fresh Drop

Our mission
Nature's Performance Apparel
We're on a mission to create nature's performance apparel that doesn't f*ck the planet and to inspire a life of (action) and adventure.