The PearlQup has added weight in the form of tiny glas pearls. The weight is optimal per size:
The Qup feels nice and soft on the skin and is breathable, so it doesn't sweat. Washable on 30, the shape stays in form.
95% Cotton, 5% Elastane, skin-friendly, elastic, flexible
XSmall, Small, Medium, Large, XLarge, 2Xlarge, Normal