Purflo fix mattress underlay white made from velor fully breathable and anti bacterial sits underneath the purflo mattress to catch and absorb spills or nappy leaks using the purflo fix mattress underlay with the purflo mattress maintains the breathability of the mattress and contributes to a healthy nights sleep fits under both 140cm x 70cm and 120cm x 60cm purflo mattress machine washable up to 90 degc and tumble dry