Replace your S1 Lifer Helmet Sizing Liners with some fresh, durable, washable and sweat absorbing Terry Liners. The S1 Lifer Terry Liner is a sewn terry cloth replacement sizing liner for the Lifer Helmet. The terry cloth is sewn onto the liner, sealed at the ends and covers the front and back of the liner making it more durable allowing it not break down as fast as the standard Lifer Sizing Liners. The terry cloth also helps absorb sweat and is washable. We recommend rinsing the Lifer Terry Liner under cold running water with or without light soap, wringing them out and air drying them. The sizing of the S1 Lifer Terry Liner is exactly the same as our standard liners and are compatible with all of the Lifer Helmets including the standard Lifer and Mini Lifer Helmets. One set of Terry Liners come with a back and front sizing liner. SizeThickness X-Small 14mm Small 12mm Medium 10mm Large 8mm X-Large 6mm XX-Large 4mm XXX-Large 2mm