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Vertical Sims 1763 men's insulated snow trousers, designed in Québec for everyday winter wear. Stretch waterproof-breathable fabric, sealed seams and 120 g insulation: protection down to −20 °C / −4 °F*. Lycra side panels from waist to knee for freedom of movement, articulated knees, gaiters with gripper elastic and reinforced lower leg. Straight cut, 81.3 cm / 32" inseam. Sizes S to 2XL.
Designed in Quebec by and for those who experience extreme cold every day, the Sims winter trousers slip very easily over your everyday clothes. A waterproof and breathable stretchy fabric, taped seams, powerful 120 g insulation (designed to retain optimal warmth without weighing you down), and a nylon lining that glides effortlessly over jeans: enough to keep you warm down to −20 °C* without giving it a second thought. The stretchy Lycra panels running from waist to knee on the sides offer absolute comfort when walking, and the high-rise back waistband completely seals off the gap that usually lets cold draughts in when you bend over.
In Montreal, snow trousers aren't just for three weekends a year: they live in the hallway from November to March, and you pull them on over whatever you're already wearing to clear the car, pop to the local shop, or wait for the bus. That is exactly the brief for the Sims. What matters then is not looking like the Michelin Man, but how quickly you can put them on and your freedom to walk — hence the Lycra panels on the sides and articulated knees, which avoid the stiff and uncomfortable gait of classic ski trousers.
Insulation does not come from the material itself, but from the air it traps. The 120 g of polyester fibre builds a volume of still air between the lining and the outer fabric, forming a thermal barrier. To be effective, this volume must remain dry: a wet fibre conducts cold instead of stopping it. This is the role of the waterproof-breathable fabric and taped seams. The rest comes down to the openings: the high-rise back waist and inner gaiters eliminate freezing draughts. High-quality trousers rarely lose heat through the fabric — they lose it through their extremities!
The lower body is protected using the same 3-layer principle as the torso, but the thermal balance is different. Your legs, made up of large muscles, generate a lot of heat when walking. They tolerate the cold better than the trunk and much better than the extremities. That's why trousers with 120 g of insulation are more than enough where the upper body would require a very thick parka.
Remember: on extreme cold weather trousers, it's almost never the fabric that fails first: it's the waist and the ankle. A garment well sealed at the extremities is much better than very thick trousers that are open to draughts.
* Indicative thermal rating. The perceived temperature varies depending on the intensity of the activity, duration of exposure, humidity, wind, and the layers worn underneath.
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