Inclusion Criteria:  Lower limb amputee Be willing and able to complete the tasks outlined Are at least 6 months on a lower-limb prosthesis Fits within an experimental liner (cushion style liner and size 23.5-28 cm) Can understand English in order to be properly consented and provide their feedback to the study personnel  Exclusion Criteria:  The risks to pregnant women and fetuses are unknown and therefore pregnant women should not participate in the study Other unforeseen disqualifying criteria (such as specific cognitive issues, etc.)