The MOTYON XTREME Short Sleeve Base Layer by UYN is the ultimate technical base layer for summer operations and extremely high-intensity physical exertion. Designed to maximize heat dissipation, this shirt utilizes innovative 4-Ways Ventilation technology: special 3D micro-ribs create a 2mm gap between the skin and the fabric, allowing air to circulate freely even under tactical gear. Completed with the Coolvent system for sweat absorption, ultra-breathable Drylight zones, and seamless Hypermotion shoulders, it ensures your body stays cool, dry, and ready for action.
This is an approximate conversion table to help you find your size. If you have already purchased an item from our brand, we recommend you select the same size indicated on its label.
| International | XS | S | M | L | XL | XXL | XXXL |
|---|---|---|---|---|---|---|---|
| Europe | 32 | 34 | 36 | 38 | 40 | 42 | 44 |
| US | 0 | 2 | 4 | 6 | 8 | 10 | 12 |
| Chest Circumference (inches) | 33-35" | 36-38" | 39-41" | 42-44" | 45-47" | 48-50" | 51-53" |
| Chest Circumference (cm) | 84-89 | 91-97 | 98-104 | 107-112 | 114-119 | 122-127 | 129-134 |
| Waist Circumference (inches) | 28" | 30" | 32" | 34" | 36" | 38" | 40" |
| Waist circumference (cm) | 71 | 76 | 81 | 86 | 91.5 | 96.5 | 101.5 |
LOWA FOOTWEAR SIZE CHART
SIZE SELECTION:
THE SIZES IN THE DROP-DOWN MENU ARE UK SIZES (ENGLISH)
conversion chart: UK size - (IT size) - size in mm
Size 6.5 (40) 257mm
Size 7 (40 3/4) 262mm
Size 7.5 (41.5) 266mm
Size 8 (42) 270mm
Size 8.5 (42.5) 274mm
Size 9 (43 1/4) 278mm
Size 9.5 (44) 283mm
Size 10 (44.5) 287mm
Size 10.5 (45) 291mm
Size 11 (46) 295mm
Size 11.5 (46.5) 300mm
Size 12 (47) 304mm
Size 12.5 (48) 308mm
Size 13 (48.5) 312mm
NEED ADVICE ON CHOOSING A SIZE?
Take one of your sneakers and look at the size in mm or cm, look at the diagram above to see what it corresponds to and order your size!
e.g., your sneaker is 27.2 cm long? Great, the closest and most correct size will be: "TG 8.5 (42.5) 274mm", in the purchase menu select size 8.5UK!
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1.20.
Extreme Ventilation (4-Ways and Coolvent):
When temperatures soar or the action gets frantic, the MOTYON XTREME shirt performs at its best. Its secret is the 4-Ways Ventilation system: a three-dimensional micro-rib structure that literally lifts the fabric 2 millimeters off the skin. This vital space allows for constant air recirculation and rapid dissipation of excess heat. This is combined with the channeled Coolvent surface, which quickly absorbs sweat and actively cools the body.
Sweat Management (Drylight):
To avoid the annoying "wet shirt" effect under your combat shirt, UYN has integrated Drylight technology. In strategic areas where sweat accumulation is greatest (such as armpits and chest), the fabric features an ultra-absorbent and highly permeable weave. Moisture is collected and instantly transported outwards, ensuring a prolonged dry feeling.
Absolute Mobility (Hypermotion):
Operational comfort is not only about coolness but also freedom of movement. The Hypermotion construction of the upper part completely eliminates traditional seams on the shoulders. This innovative design conforms to the body's natural anatomy, supports posture, and prevents any type of irritation or chafing, facilitating weapon transitions and rapid movements.
Pro Tips for a Perfect Summer Setup
The tactical advantage of the air gap: The main problem with Plate Carriers or Chest Rigs in summer is that they "compress" clothing against the body, blocking natural sweat evaporation and creating an unbearable oven effect. By wearing this shirt as the very first layer in contact with the skin, the 3D structure of the "4-Ways Ventilation" will create an incompressible 2-millimeter thickness. This means that, even with tight tactical gear, air will continue to flow vertically under your equipment, dissipating heat incredibly effectively. It's the secret to avoiding dehydration collapse during summer patrols!
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