Rab Mens Syncrino Base Long Sleeve Baselayer


All about this product



The Syncrino Base Long Sleeve T-Shirt is the ultimate choice for those seeking comfort and performance in cold mountain environments. Crafted from Rab's innovative Syncrino 125 fabric, this long-sleeve t-shirt is a harmonious fusion of breathability, skin-friendly softness, and remarkable stretchiness. It serves as an ideal first layer for cold-weather mountain climbing, offering superior odour resistance and quick-drying capabilities, making it equally suitable for extended adventures.


The fabric's composition is a testament to its excellence, combining the natural advantages of Merino wool with the durability and quick-drying properties of 32% recycled synthetic fibers. Merino wool, renowned for its cold-weather suitability, excels in moisture absorption, effectively wicking away sweat and ensuring comfort while regulating body temperature. Even when wet, it retains its insulating properties, though drying may require some patience.


Complementing the Merino wool, the synthetic fibers offer robustness, lightweight performance, shape retention, and rapid drying. The blend of these materials yields a fabric that is not only quick-drying and moisture-wicking but also exceptionally insulating and durable, making it the perfect choice for base layers in mountainous conditions.

Technical details

Ideal use:

Mountaineering, Climbing


Main Fabric: Syncrino 125 Merino/Polyester Blend (125gsm)

53% Polyester (32% recycled), 47% Merino Wool

Key features:

Low bulk Merrow seams for comfort

Single jersey fabric construction

Moisture wicking

Odour resistant

Set in sleeves



Quick dry

Tech specs:

Centre back length (Size M): 70.5cm

Weight: 162g

Size and fit:

Fit: Slim



Long Sleeves

Other features

Product Code
Reviews (1)

User Reviews (1)

Our Planet
Our Planet logo
This product has features that impact at least three of our environmental areas.


This product is made from materials such as recycled, organic, alternative (fast renewable raw materials), a combination of these and/or does not intentionally contain any chemicals.
At least 50% Recycled Synthetics


This product as a whole or the individual materials within this product have the following certification(s). These are voluntary guidelines used to demonstrate their commitment to good environmental, social, ethical, and food safety practices.
CT Carbon Neutral
Fair Wear


This product complies with the following feature(s) aimed at eliminating waste and maximising resource reuse.
Easy to Repair
Minimum of 4 Years Guarantee

About this brand


The Rab story began in 1981 in the attic of a small, terraced house in Sheffield where Rab Carrington made the first sleeping bag to bear his name. Hand-stitched and devised with his own ingenious eye, Rab's experience from years spent in the mountains was apparent in his designs, and soon there was popular demand from Rab's friends and the growing local climbing community. Now, decades later, those honest, hard-wearing designs can be found all over the world; wherever adventurous individuals face up to the elements. From Himalayan peaks to cold, crisp evenings around a camp fire. This began as the brand's story, but it also belongs to those who've loved and cared for each and every one of our products. Who've made them their companions on long trips and expeditions. 


Let us know you agree to cookies

We use marketing, analytical and functional cookies as well as similar technologies to give you the best experience. Third parties, including social media platforms, often place tracking cookies on our site to show you personalised adverts outside of our website.


We store your cookie preferences for two years and you can edit your preferences via ‘manage cookies’ or through the cookie policy at the bottom of every page. For more information, please see our cookie policy.