Ltpgtthe 66fit hand therapy putty is a soft bleed proof nontoxic clean non oily putty that is colour coded for progressive resistance exercisesltpgtltpgtltstronggtfeaturesltstronggtltpgtltulgtltligtmaterial siliconltligtltligtweight 450g1lbltligtltligtcolour blueltligtltligtfirmness firmltligtltulgtltpgtltstronggtdescriptionltstronggtltpgtltpgt please note this is a 450 gram tub and is reco