The FUSYON DEFENDER Long Underpants by UYN are the ultimate technical base layer for the lower body, designed for the most demanding tactical operators. Sharing the same excellent technologies as the eponymous shirt, these tights offer unparalleled thermal and muscular support. Thanks to the Coolvent and Drylight systems, they ensure maximum breathability and lightning-fast drying, while Resifit technology specifically protects the knees from physical stress. Perfect for wearing under combat pants, they guarantee total freedom of movement and exceptional thermal insulation through the Heatmemory system.
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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Ergonomic Construction and Tactical Protection:
The FUSYON DEFENDER underpants adopt the same advanced technologies as the upper body garment to ensure uniform performance across the entire body. The ergonomic, seamless construction in critical areas guarantees total freedom of movement for the legs and pelvis. Strategically placed special 3D knitted zones provide breathable protection that cushions chafing from tactical belts (battle belts) and harnesses, ensuring prolonged comfort during the most demanding marches.
Advanced Thermoregulation (Coolvent and Drylight):
Sweat management is vital when wearing heavy camouflage pants. Coolvent technology uses a channeled inner surface to promote constant airflow, cooling the legs during maximum exertion. The Drylight system completes the task by rapidly wicking moisture outwards thanks to its ultra-absorbent knit, keeping the skin rigorously dry and preventing the "sponge" effect.
Insulation and Joint Support (Resifit and Heatmemory):
The knees, constantly subjected to stress during bending, sprints, and tactical movements, are protected by the Resifit system: three-dimensional chambers that create an insulating air layer against the cold and reduce friction. Overall thermal insulation is maximized by the Iso Chambers, while the innovative Heatmemory technology captures body heat, protecting leg muscles from rapid cooling during periods of waiting or rest and improving physical recovery.
Pro Tips for a Perfect Setup
Synergy with tactical knee pads: The Resifit system located on the knees is a true godsend for those who use combat pants with integrated rigid knee pads (like Crye Precision style models). The three-dimensional air chambers of the tights create a soft internal cushion that absorbs the impact of plastic and the friction of the camouflage on the knee, preventing the classic abrasions or joint discomfort after hours spent in a kneeling position.
The FUSYON DEFENDER Long Sleeve Base Layer produced by UYN is...
