What is this?This band anti-slip, durable elastic TPE can easily be stretched around the legs of chairs or desks to instantly create a quiet, non-disruptive fidget outlet.What will I get?Pack of 4 Chair Bands; Width: 50mm/2inch; Fold Length: 300mm/12inch; Ultimate Stretch Fold Length: 600mm/24inch. Thickness: 1.1mmAre there any advantages of the product?Focus attention, bands are fidget bands for chairs designed to increase focus and attention. These chair bands help with self-regulation and improve learning. Long-lasting resilience and preventing snapping, the TPE provides a firm, yet flexible bounce that gives the right amount of resistance.How to use it?The band can be used on chairs with 2 front legs. Simply stretch the thick bounce band over the front two legs of a chair to install.