
The Damart size chart does not function as a universal guide. Depending on whether you are buying Thermolactyl underwear, dress pants, or sports leggings, the size references change. This discrepancy between different ranges leads to frequent ordering errors, especially online. Understanding these variations allows for accurate choices right from the first purchase.
Damart Size by Product Category: Three Charts, Not One
One point that competing guides rarely mention accurately: Damart uses distinct size charts based on the type of clothing. The women’s reference for classic ready-to-wear does not cover that of lingerie, which itself differs from that of Thermolactyl or the sports range.
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Knowing how to choose the right Damart size therefore requires first identifying the category of the targeted garment, then consulting the corresponding chart.
| Category | Women’s Chart | Men’s Chart | Particularity |
|---|---|---|---|
| Classic Ready-to-Wear | From 34 to 64 | From XS to 4XL | Women’s fit is more tailored, men’s fit is straighter |
| Thermolactyl (underwear) | Specific sizes by measurements | Specific sizes by measurements | Close-fitting adjustment, prioritize bust or hip measurement |
| Sport (Damart Sport) | Up to 4XL on certain models | Up to 4XL on certain models | Wider range than ready-to-wear, technical cut |
The sports range offers sizes that go significantly further than standard ready-to-wear. This range is useful for larger body types, but it also means that the usual references (an M in classic Damart) do not necessarily correspond to the same M in Damart Sport.
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Thermolactyl and Fit: Why the Material Changes the Game
Thermolactyl is designed to be worn close to the body. This proximity to the skin is what allows it to retain heat effectively. Taking a size up out of comfort reflex reduces its thermal properties.
An oversized Thermolactyl loses its insulating effectiveness. The fiber acts by contact: if a layer of air forms between the fabric and the skin, thermal regulation decreases.
Damart recommends measuring directly on the body, without tightening the measuring tape, and relying on centimeters rather than letter sizes. The three measurements to take vary by item:
- For a women’s Thermolactyl top: bust and hip measurements, keeping the larger measurement if the two do not correspond to the same size on the chart
- For a men’s Thermolactyl top: primarily bust measurement, as the cut is looser at the hips
- For bottoms (tights, long underwear): hip and waist measurements, checking the inseam length if the manufacturer mentions it on the product sheet
The reflex to take the next size up “for safety” works for a knitted sweater or dress pants. For Thermolactyl, it’s the opposite: the exact size guarantees thermal comfort.
Intermediate Body Types and Damart Sizes: Cases Where the Standard Guide is Not Enough
Size charts are based on ranges. If your measurements fall exactly between two sizes, the choice depends on the type of garment and the intended use.
Hesitation Between Two Sizes on a Fitted Women’s Garment
Damart cuts its women’s models relatively close to the body. If you are unsure between two sizes in women’s ready-to-wear, the larger size is preferable. Clothes tend to follow the shapes, which can make the smaller size potentially uncomfortable after a few hours.
Hesitation Between Two Sizes on a Men’s Garment
In contrast, men’s cuts are looser and straighter. A man between two sizes can choose the smaller size without risking a garment that is too tight. This principle applies to both tops and pants in the classic range.
Special Case: Sports and Technical Pieces
In the Damart Sport range, the logic diverges even further from ready-to-wear. Technical garments are designed to accompany movement. The sports cut incorporates dynamic ease that does not exist in city models. If you wear an L in classic Damart, you might wear an L in Damart Sport too, but the feel will be different: more freedom at the shoulders, more length at the torso.
The sports range goes up to 4XL on certain items, providing options for body types that are rarely served by classic lines.

Measurements in Centimeters or Letter Size: Which Reliable Data for Online Ordering
Damart systematically displays size conversions in centimeters on its product sheets. This data is more reliable than letter size for a simple reason: a Damart M does not necessarily correspond to an M from another brand.
Bust, waist, and hip measurements remain the three reference measurements. Take them on the body, standing, with a flexible measuring tape placed horizontally. No thick clothing on top. No tightening.
If the product sheet only displays letter sizes (XS, S, M, L), look for the conversion chart on the Damart size guide page. Each category (ready-to-wear, lingerie, Thermolactyl, sport) has its own chart.
The hip measurement is often the most discriminating for women, while the bust measurement dominates for men. In case of doubt about a specific piece, comparing your own centimeters to the dedicated chart remains the safest method, well before relying on the shopping experience at another brand.
Choosing the right Damart size relies on three elements: identifying the correct chart based on the type of garment, measuring in centimeters rather than letter size, and adapting your sizing logic to the material (close-fitting for Thermolactyl, looser for sport). These guidelines significantly reduce the risk of returns.