Rectangular Bolster - Organic CottonTRIBE brings you this high performance rectangular bolster with a GOTS certified organic cotton cover. The bolster offers premium support due to its size and unique kapok filling Kapok is lightweight, resistant to dust mites, mould and mildew, so it is hygienic, non toxic, hypoallergenic and environmentally friendly. A fully packed kapok bolster weighs under 1. 8kgs, nearly half that of a wool bolster. So you get all the support without the weight!