410 g/m2... 250g/m2.. GSM... But what does that actually mean? GSM is simply just the weight of a woven wrap in grams per square meter. Did you know that the GSM doesn't always reflect on the thickness of a wrap? Wraps can also be or feel heavier by the materials used or the weave. Strength doesn't depend on GSM either - a known 'mythe' is for example: the higher the GSM, the thicker and stronger the wrap. This is not always true. For individual advice on our products, feel free to contact us. We can guide you to the perfect wrap that will suit your preferences.