merino betaspun®️ long sleeve

The new merino BetaSpun® is a light weight, warm, breathable first layer that's so soft and stretchy it becomes almost invisible to wear.

£85.00

Colour: Dark Spruce

Choose you size

XS-S S-M M-L L-XL

models are wearing size XS-S

Fit

finding your fit

Designed to be worn next to the skin, our base layer has a comfortable, close-to-body fit with plenty of natural stretch for easy movement. Use the measurements below as a guide. If you like a snugger fit, size down. If you’d prefer a little more room, size up.

	Women's UK size guide	Unisex Chest/Bust size (inch)	Unisex Chest size (cm)
XS-S	up to size 10	up to 35"	up to 89cm
S-M	up to size 12	up to 37"	up to 94cm
M-L	up to size 14	up to 40"	up to 102cm
L-XL	up to size 16	up to 43"	up to 109cm

How to Measure Chest/Bust: with arms relaxed at your sides, measure under your arms, around the fullest part of your bust or chest.

sock size guide

Sock sizes and fit are unisex.

Sock Size	To fit UK shoe size	To fit EU shoe size
S	3-5.5	36-39
M	6-8.5	40-43
L	9-11.5	44-47

Shipping

UK Standard Shipping is 2-3 days using Royal Mail Tracked 48

UK Express Shipping is 1-2 days using Royal Mail Tracked 24

We aim to ship orders next day Monday to Friday.

We are working to be able to ship outside of the UK

Shipping Policy here

Returns

14-day right to cancel (UK online only)

30-day returns (UK full price and event purchases)

Products must be unworn and in original packaging with tags attached.

Damaged, faulty or incorrect items email us

Returns and Refund Policy here

Performance crafted by decades of experience and refined on every run, ride and adventure since. Version 005 brings together 3D seamless knitting and Betaspun® yarn with more merino than ever, taking loomi comfort, quality, versatility and durability further than ever before.

product details

Engineered for the trail, made to endure and practical for all outdoor activities and all levels. The loomi base layer top is so comfortable and so versatile you can practically live in it.

Features

Powered by BetaSpun® yarn technology, an ultra fine 17.2 micron merino wrapped with a fine nylon filament in a patented spinning technique for unmatched strength and enhanced pilling and abrasion resistance
Light weight, soft and durable
Breathable, fast-wicking and quick-dry
Merino is odor resistant and stays feeling fresh for longer
Thermoregulating keeps you cool when it’s warm, warm when it’s cold, reduced wet cling and post exercise chill
One-piece seamless body allows for our unisex sizing and delivers a snug feel that stretches and moves freely without irritation and garment twisting
Integrated knitted cuffs and hem that keep good shape and recovery from stretch
Raglan sleeves for extra movement and flatlock seams prevent chafing
Engineered knit logo and labelling – no irritating label tabs
Versatile and Easy Care

Materials

Composition: 77% Merino Wool, 21% Nylon, 2% Elastane
Material Weight: 160gms
Ultra Fine Merino using 17.2 Micron
Origin of Main Yarn: Spun in Europe, Sudwolle Group | OEKOTEX Standard 100 Product Class II compliant: D11-1143 valid 31/01/2027 and using Wool that conforms with the IWTO (International Wool Textile Organisation) for Wool Sheep Welfare
Origin of Knitting/Manufacturing: Portugal, Sidonios Seamless Tech, S.A. | OEKOTEX Standard 100 Product Class II complaint: 15698CIT valid 31/03/2027 | Higg FEM, Higg FSLM - SLCP, ISO 14001, ISO 9001, ISO 45001 compliant

*Product Class II: refer to products with direct contact with skin

Care

Merino is made to wear more, wash less

When it's time for a refresh, follow our recommended instructions

30 degree wash / no bleach / line dry / no iron / no dry clean

Wool is a natural fibre and we recommend you wash with like colours and use a wool specific detergent

wear air repeat

you are going to love me

barely there, beautifully warm

It’s so soft and light you’ll hardly know it’s on, yet it keeps you lovely and warm. When the weather turns or you’re working hard, merino keeps you warmer and more comfortable than a synthetic base layer, even when it’s damp
stretch yourself

Feel free to move with every stride, scramble and reach, in a layer that stays put. With no scratchy labels and no side seams to twist or rub, it holds its shape and keeps you comfortably covered, however far you go.
regulate on the go

Merino responds to changes in your body temperature, keeping you warm when it’s cold and cool when the heat is on. Push up the sleeves on hard efforts, then pull them back down when you need the warmth again
linger longer

Take in the summit view or stop for a chat at the gate without the sudden chill. Merino holds onto warmth after your effort, so you can enjoy that post-run coffee without feeling cold, clammy or a little whiffy

what makes it work

Natural fibre, advanced technologies, one carefully engineered layer. Combining Betaspun® yarn with 3D seamless knitting takes real skill and know-how. The result is a base layer that’s uniquely loomi.

born seamless

The body and arms are knitted as one continuous tube on a Santoni fine-gauge seamless machine. With no side seams, there’s nothing to rub or chafe, just a smooth, close fit that moves with you.