Merino Base Layer Top (unisex)

Our Loomi Merino Base Layer is made from super fine merino wool. The seamless knit and engaged fit delivers unbeatable performance and unparalleled comfort.

Colour: Navy Blue / White
Size Guide

Product manufactured in Portugal.



Expertly crafted with a blend of ultra-fine Merino wool and a strong, synthetic filament, our Merino Long Sleeve Base Layer provides superior softness, natural insulation, and moisture-wicking capabilities to keep you warm, dry, and comfortable in even the most rugged outdoor conditions. The addition of a synthetic filament adds durability and strength to the fabric, ensuring that it can withstand tough outdoor adventures. The form-fitting design offers full freedom of movement, while the lightweight and breathable material makes it ideal for outdoor activities like running, hiking, and skiing. Our Merino base layer is also naturally resistant to odors, making it a perfect choice for extended trips or long days on the trail. And when it's time for cleaning, it's easy to care for, so you can spend more time enjoying the great outdoors. With a seamless main body and flatlock seams to prevent chafing, our Merino base layer offers unbeatable comfort and the perfect fit. Take your outdoor sports to the next level!
Features & Details
  • Made with superfine BetaSpun Merino Wool for durability and comfort 
  • One-piece seamless body for unisex fit and comfort 
  • Breathable, fast-wicking and odour resistant  
  • Temperature regulating – keeps you cool when it’s warm, warm when it’s cold 
  • Integrated knitted cuffs and hem 
  • Raglan sleeves for extra movement and seam-free shoulder area 
  • Flatlock seams to prevent chafing 
  • Knitted logo and labelling – no label tabs! 
Loomi Composition
  • 67% Merino wool  
  • 26% Nylon  
  • 7% Elastane  
  • Manufactured in Portugal
Care for Your Loomi

Total easy care Merino wool washes with rest of your kit in a standard machine wash cycle. 

  • Machine Washable 40 degrees 
  • Do Not Bleach  
  • Line Dry 
  • Do Not Iron  
  • Do Not Dry Clean.

We recommend the use of a wool friendly or non bio liquid detergent and avoid harsh powder detergents to preserve the natural characteristics and colour of your garment.

Wool can be worn multiple times without needing to be laundered after every use. We recommend airing your Loomi products between washes.

Look after your Loomi and your Loomi will look after you! 

Sucks sweat like hell

Feels lightweight, breathable and dries super quick

Seamless knitting

Fits like a glove, stays in place and has no annoying labels.

Feels like a cosy cuddle

Super-soft Merino, warm and breathable. Just like a second skin.

Free delivery on orders over £150*

We offer free shipping when your cart value reaches £150

*on UK shipments only

Customer Reviews

Based on 10 reviews

This top is heaven, bought after having had such a great experience in the socks. It is so comfortable, warm but not sweaty and activity versatile. Worn for hill running and racing, hiking, skiing, Pilates and just general day to day coziness. Perfect!

Best thing ever (she says)

I bought the long sleeved base layer for my daughter. She can’t believe how good it is! Keeps her temperature perfectly regulated, it’s so comfy, and she’s worn it for 10 runs and hasn’t had to wash it yet! And it’s not just for running apparently, it’s keeping her warm all day through the winter. Socks next!

Multi-functional baselayer ticking all boxes

My Loomi Merino baselayer was put to the test on a 9day fast packing trip on the Cape Wrath Trail, which it performed brilliantly on: Never too hot, too cold, too sweaty or too smelly. It has since been a loyal companion on runs and walks, is easy to wash and keep in shape. I only wish I'd gone one size down. Personally am also looking forward to more colour choices ;-) 100% recommended!

Cameron Duncan
Base layer

Best base layer ever I wear mine every day outside working with my horses I’m outside all day in these freezing temps and it keeps me super warm all day the best base layer on the market in my opinion

Love it

I received this as a gift and I love it. My go to for going for a run/hike or to play paddle.

Keeps me warm without the bulk. I wear a running gilet over the top and that's enough. Normally would need a bulky sweater. Can't wait to try for skiing!