The Weight Map: Which Knit Goes Where, from 80 to 400 g/m²
A practical map placing the dominant weight bands of ten polyester knit families on one axis, showing which band matches which product.
Weight (g/m²) is a knit's mass per square metre and the fastest indicator of which product it suits. Fersan's ten families line up on a single 80–400 g/m² axis; the map below summarises which band matches which product.
From band to product
| g/m² band | Typical family | Typical product |
|---|---|---|
| 80–130 | Air mesh / net | Lining, panel, light jersey |
| 120–180 | Single jersey / microfiber | Tees, tanks, innerwear |
| 165–240 | Piqué / bird's-eye | Polos, performance tees |
| 170–260 | Interlock | Polos, jerseys, babywear |
| 180–330 | French terry | Sweatshirts, hoodies |
| 270–360 | Ponte / double-knit | Structured dresses, skirts, jackets |
| 280–420 | Three-thread fleece | Winter sweatshirts, joggers |
| 180–400 | Polar fleece | Winter outerwear, lining, blankets |
The same weight is not always the same hand
Weight alone does not tell all: single bed (single jersey) and double bed (interlock) feel very different at the same 200 g/m²; yarn fineness (denier), knit density and finishing also decide. So read the values as 'typical ranges', not exact recipes.
Selection tips
- For light and cool, start at the low band (mesh, light single jersey).
- For coverage and durability, move to the mid-upper band (interlock, French terry).
- For warmth and upright stance, the top band (three-thread, ponte, polar).
- Exact weight, composition and width are set to order — confirm with a sample.
Frequently asked questions
Which weight goes to which product?
Roughly: mesh and light jersey 80–150 g/m² (summer, lining); tees and innerwear 120–200; polo/piqué and rib 165–300; sweatshirt/hoodie two- and three-thread 250–400 g/m². The exact band depends on the fabric family.
Does the same weight always give the same hand?
No. At the same GSM, structure, yarn and finish change the hand; for example a 200 g/m² interlock and a piqué of the same weight differ in stiffness, opacity and stretch.