The AMBITYON DEFENDER Long Baselayer Pants by UYN are the ultimate tactical tights for high-intensity activities and harsh climates. Designed for operators constantly on the move, they ensure total freedom of action under combat pants. They leverage the Coolvent system and ultra-absorbent Drylight fabric to instantly wick away sweat, keeping legs cool under exertion and rigorously dry. Resifit technology offers advanced knee protection, while the Heatmemory system protects muscles from cooling down during short operational breaks.
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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Tactical Mobility and Ergonomics:
In assault actions or fast patrols, leg agility is everything. The AMBITYON DEFENDER baselayer pants are built to follow muscle movements without creating uncomfortable bulk under your uniform. Their anatomical structure ensures fluid movement in every situation, from sprints to prolonged squats, never limiting the operator.
Extreme Dynamic Climate Control (Coolvent and Drylight):
Unlike regular thermal garments that risk overheating legs during movement, the Ambityon line excels in breathability. The inner surface is grooved with Coolvent channels, allowing constant airflow to cool the body during activity. In areas where sweat tends to accumulate, Drylight technology intervenes: an ultra-permeable weave that draws moisture away and wicks it to the outside at record speed, ensuring lasting comfort and preventing the "sponge effect."
Joint Protection and Smart Insulation:
Knees are among the most stressed joints in the field. UYN protects them with the Resifit system: three-dimensional air chambers that create an insulating layer, reducing impact stress and preventing painful chafing. Finally, the innovative Heatmemory system and Iso Chambers work in synergy to trap body heat generated during running, protecting sensitive areas and preventing muscles from abruptly cooling down at the end of engagement.
Pro Tips: The Assaulter's Setup
Dynamic Synergy: Just like the shirt from the same line, these baselayer pants are the ultimate for anyone in an assaulter or fast reconnaissance role. Their ability to wick away sweat while you're on the move is unparalleled. Furthermore, the Resifit system works magnificently in combination with combat pants equipped with integrated knee pads: the 3D layer of the fabric absorbs the rigid friction of the knee pad on the kneecap, safeguarding the joint even if you spend hours transitioning on your knees and sprinting from cover to cover.