Our range of weighted blankets were initially set up so you can buy them in installments. Each 'section' measures 65x45cm and can be paid for by payment plan. They are a good size to be a lap blanket.
If desired, you can then buy as many of these sections as you like. Once paid for, they can be woven together with your existing blanket to bring it to whatever size required.
I have also added a bishops mantle version to our range, as we have found many people like wearing them around their shoulders. This variation also can function as a lap quilt, as it drapes over the lap in much the same way. These currently come in two weights and standard sizing, but can be extended over the shoulder to make them heavier if desired.